Biome · everything in abundance, dangers included
Tropics / jungle
The exact opposite of the desert: water and food in abundance, and that is precisely why people underrate this biome. What kills here is not scarcity but damp and small things — a scratch that turned septic, wet feet, water you did not boil, an unfamiliar fruit you ate.
Если вы оказались во влажных тропиках
- Остановитесь и закройте кожу. Не прорубайте путь в панике. Осмотрите ноги, руки и лицо; наденьте обувь, длинные рукава и защиту от насекомых.
- Выберите сухое высокое место. Выше следов паводка, не под мёртвыми ветвями и плодами, не у стоячей воды и не на звериной тропе.
- Сначала крыша и место для сна. Тент с большим уклоном и поднятая либо толстая сухая подстилка. Сырость, насекомые и раны опаснее ночного голода.
- Обработайте воду. Отстойте и профильтруйте муть, затем кипятите или обеззараживайте. Чистый вид ручья не означает безопасность.
- Вымойте и закройте каждую рану. Ежедневно сушите стопы, меняйте носки, лечите потёртости. Не ходите босиком и не входите с раной в мутную или солоноватую воду.
- Лихорадка, нарастающая слабость, спутанность, красные полосы от раны, гной или быстрое распространение отёка требуют медицинской помощи. Не «пережидайте» инфекцию.
Day 1, hours 1–2 — water and height off the ground
⏱ 30–40 minutes. Dark comes early in the tropics and almost instantly — around 18:00, with no duskYou do not have to look for water, it is everywhere — what you have to find is running water, not standing. Camp site: high ground, not a hollow (at night cold damp air flows down into hollows, and everything that crawls goes with it), not under a palm carrying fruit and not under dead branches — "a falling coconut" is not a joke but a real cause of injury. Plan from the start for daylight to end abruptly.
Day 1, the rest — a platform, not a lean-to
⏱ platform or hammock 2–3 hours · a cover against the downpour is mandatoryCordage: vines — the rare case where the material is ready to use straight away, with no splitting down and no twisting: a thin flexible vine ties as it is. Shelter: raised off the ground — a platform or a hammock between trunks, with a sloping roof of big leaves. There are two reasons: the crawling things, and flooding, because a downpour turns the ground into a stream within minutes.
Fire comes harder here than anywhere: everything is wet. Look for the dry inside — the heart of standing deadwood, trunks split open from within, resinous pieces. Fire in the tropics is not for warmth but for boiling, drying and smoke against insects.
1. Sleep above the ground, not on it
In temperate forest the ground is merely cold. In the tropics it is wet and alive: water runs over it after every downpour, and everything that bites and stings walks over it. So the only right shelter here is a raised one, and it gets built before the roof.
- Pick a level spot on high ground, but not under a palm carrying fruit and not under dead branches. A coconut the weight of a brick falls from fifteen metres.
- Drive in four stakes or use four closely spaced trunks. The deck goes knee height, 40–60 cm. Lower and it floods, higher and it is awkward to climb onto and it wobbles.
- Lash four poles around the perimeter — that is the frame. The easiest thing to lash with is a thin vine exactly as it is: it needs no soaking and no twisting, a rare luxury of the tropics.
- Lay poles or bamboo split lengthways across the frame, tightly. On top of that a thick layer of leaves, so it does not press into your ribs.
- Over the deck stretch a sloping roof of big leaves, laying them bottom upward and overlapping, stems up, like tiles. Make the pitch steep: tropical rain goes straight through a shallow roof.
- Under the platform light a small smoky fire. The smoke goes up through the deck and keeps mosquitoes off all night.
Quick substitute: a hammock of cloth, netting or bark slung between two trunks, plus a separate cover over it. It goes up in half an hour and solves the same problem. The one thing that matters is that the cover is mandatory: sleeping under open sky in the tropics means waking up in water.
🌙 Night 1
The night is warm but damp, and that wears you down differently from cold. The main task of the night is to get dry. Take off your boots and socks, dry your feet by the fire, sleep with bare feet. Eight dry hours out of twenty-four is what separates healthy feet from feet that cannot walk.
A tropical night is very noisy — insects, frogs, monkeys, birds. That is normal and does not mean danger. Fire smoke keeps mosquitoes off better than any repellent, and mosquitoes here are more dangerous than every large predator of the biome put together.
Days 2–3 — the critical window
⏱ What is decided here is not hunger but infection and the state of your feetWater — boil it with no exception whatsoever: the microbial load here is higher than in a temperate climate, and a "clean-looking stream" means nothing. Daily check: feet, between the toes, every scratch and bite. Wash any wound with boiled water and keep it dry. Traps go on narrow game trails — dense vegetation makes trails more predictable than in the forest.
Your feet are what you will walk out of here on
What happens to a wet foot. Skin that does not dry for more than 10–12 hours macerates and turns white, circulation in the foot fails, numbness comes, then pain, then cracks that infection gets into at once. After a few days a person simply cannot walk. That is how armies lost more men than they lost in battle — in the trenches of the First World War and in Vietnam.
- Eight dry hours out of twenty-four. That is the standard, not a wish. Usually it is the night: boots off, feet washed, wiped dry, sleep barefoot.
- Dry your socks by the fire, not in it — on a stick off to the side of the flame. Boots dried too hard crack, a scorched sock tears on the first march.
- Keep a second pair of socks dry at any cost: in a closed bag, inside your shirt, anywhere. Change them at a halt, hang the wet pair to dry as you walk.
- Every evening check between your toes — that is where it all starts: chafing, fungus, rubbed spots.
- Wash any scratch with cooled boiled water and keep it dry. In the tropics, what would have healed by itself at home turns septic within a day.
The sign that means stop and dry out immediately: the foot has gone pale, swollen and wrinkled, as after a long bath, and you have stopped feeling it. From there it is treated only by staying still and by dry warmth, and you will not be able to walk any more.
🌙 Nights 2–3
A ritual appears that will stay with you for good: in the evening, drying feet and boots, checking your body, treating scratches, boiling water for the morning. A smoky fire under the platform. Everything that must stay dry goes off the ground and under a roof.
Week 1 — protein and bamboo
⏱ The rest of the weekFishing and traps give you reliable food with no risk of misidentifying a species. If there is bamboo — you have got the best material in this guide: ready-made vessels in the hollow internodes, a light strong frame for shelter, split trunks as gravity-fed water channels, sharp splinters as a cutting edge.
Water straight from bamboo and vine
The tropics are the only place where drinking water is sometimes inside the plant, already filtered by the plant itself. It is no substitute for a stream, but it saves you on the move.
- Bamboo: tap the stem between the nodes. A dull sound instead of a ringing one means the section is full of water. Tip the stem over, cut into the upper node — the water will pour out.
- Vine: take a thick one, arm-thick, and not thorny. First cut it at the top, then cut off a metre-long piece at the bottom and put your mouth or a vessel under it. If you cut the bottom first, the liquid is drawn upward and will not come out.
- Wait: a metre-long piece gives half a cup to a cup over a few minutes.
The check, required every single time. The sap has to be clear or slightly cloudy, and tasteless. If it is white, milky, sticky, bitter or burns your lips — spit it out and do not drink: milky sap in tropical plants is almost always poisonous. Put a drop on your skin first and wait — burning or a rash is an answer of "no" as well.
That same bamboo gives you all the camp's vessels: a section with one closed end is a ready cup or pot, and you can boil in it right on the fire until the wall burns through. A trunk split lengthways is a channel that brings water into camp by gravity.
🌙 Night, week 1
The roof already holds off the downpour, the platform is raised, the smoke keeps the insects away. The night becomes quiet, and the main risk is relaxing and skipping the foot check or not boiling the water properly. In the tropics it is precisely the routine that saves you.
Weeks 2–4 — the blowgun
⏱ No hurryThe hunting weapon of the tropics is not the bow but the blowgun. The reason is purely practical: in dense vegetation a bowstring catches on branches, and you can hear it being drawn. A blowgun made from a single bamboo stem is silent and accurate on small game and birds at 10–20 metres — and that is exactly what the game here is. In the rainforests of Asia and of the Amazon people arrived at this solution independently of each other, because the conditions are the same.
A month and beyond
⏱ OngoingA stilt house on a bamboo frame, water piped in split trunks, smoking (in the damp it is needed more than anywhere else — otherwise meat spoils within hours), a garden: the tropics are the only biome where things grow all year round.
Animals
They carry malaria, dengue and other diseases. Protection: fire smoke, covered clothing at dusk, mud or ash on exposed skin, sleeping under a net of any cloth. A mosquito here is more dangerous than a jaguar by several orders of magnitude. What to do: A smoky fire, a net or netting, covered clothing at dusk. Get rid of any standing water near camp.
Смотрите, куда ставите ногу и кладёте руку; не переступайте через бревно, не увидев землю за ним, и не шарьте руками в листве или дуплах. При укусе: вызовите помощь, оставайтесь неподвижным, снимите кольца и часы, держите конечность в удобном нейтральном положении и накройте место чистой сухой повязкой. Не резать, не отсасывать, не прикладывать лёд и не накладывать жгут.
Check and shake out your boots and clothes every time. Sleep raised off the ground. Ticks, leeches, larvae under the skin — check your body daily. What to do: A net over your sleeping place, boots shaken out, nothing edible in the dwelling. Wash every bite and keep it dry.
Jaguar, leopard and tiger avoid people almost always. Do not go near a fresh kill — the owner may be nearby. What to do: Do not crouch and do not turn your back; look it in the eye, make yourself look bigger, back away slowly. If it attacks, fight, aiming at the face and eyes.
Do not ford rivers without probing the bottom, do not swim in murky water in regions with crocodiles and caimans. A downpour upstream raises the river without warning. What to do: Do not go into the water alone and do not touch anything brightly coloured. If the current takes you, swim along the bank, not against the flow.
Water: running streams, rainwater (the cleanest — collect it straight off leaves and the roof), water from the hollow internodes of bamboo, cut vines of certain species. Standing water comes last.
Protein is safer than plants, and that is the key choice of this biome. Fishing, traps on narrow trails, insects, larvae in rotten wood. None of it calls for botanical identification, which means none of it can poison you by mistake.
The only exception is what you recognise beyond doubt, because you have seen it in a shop: coconut, banana, papaya, mango, pineapple. If you are not a hundred per cent certain that this is what is in front of you, it is not food.
The only exception for the tropics: what you recognise beyond doubt, because you have seen it in a shop. Everything else — no.
Thick cone-shaped shoots coming out of the ground, in tight scales. You recognise them by the bamboo standing next to them. Boiled only, and change the water twice — raw shoots hold a bitterness that goes with boiling.
running water · high ground · allow for early dusk
cordage from vines · a raised platform or hammock · a roof of leaves · fire from dry heartwood
bamboo containers · traps on trails · boiling · a smoky fire against insects
blowgun · smoking · water piped in split bamboo
a stilt house on a bamboo frame · a year-round garden
Where to put it
- On high ground and on a slope, not in a hollow: water runs down there and everything alive slides down with it.
- Not under a palm carrying fruit and not under dead branches. A coconut the weight of a brick from fifteen metres up is a real cause of deaths.
- By running water, but two heights of a man above its bank. A tropical river rises within hours.
- In a spot the wind blows through. A draught is not the enemy here but a tool: it dries, keeps mosquitoes off and makes the heat bearable.
- Check for termites: earth tunnels up the trunks, cones of termite mounds nearby. There is no point putting a house on their territory.
- 1 A stone under the stilt. A stilt driven straight into the ground rots within a season and gets eaten by termites. A flat stone or a butt end charred in the fire pushes that back by years.
- 2 Stilts. The deck goes half a metre to a metre up. Lower and it floods, higher and it is awkward and unsteady.
- 3 Rat guards. Upturned discs of stone, bark or tin on every stilt below the deck. Rats, snakes and ants cannot get past them — a trick known to every stilt-building culture.
- 4 The deck. Bamboo split lengthways, or poles with gaps: water and debris fall through, air passes from below.
- 5 Walls are a lattice, not a wall. Wattle with wide gaps, or mats that you drop in a downpour and raise in the heat. A solid wall in the tropics means stuffiness and mould.
- 6 The roof: the main element of the house. A pitch of no less than 45°, with big overhangs — down to the ground at the sides. Thatch with leaves bottom upward and overlapping, stems up, each row covering the fastening of the one below.
- 7 A smoky fire under the deck. The smoke goes up through the floor, keeps insects off and dries the structure out. Keep the fire small and off to the side of the stilts.
- ! Do not build on the ground "just for now". A floor on the soil in the tropics means damp, fungus on your feet, ants in your bed and rot within a month. A small platform is better than a big hut on the ground.
How to build a stilt house
- Mark out a rectangle and check the diagonals with a cord — they must be equal.
- Prepare the stilts: the hardest trunks; char the butt end in the fire to a black crust — the simplest protection against rot and termites, known for thousands of years.
- Stand the stilts on stones, rather than burying them, if the ground allows. If you do bury them — the same charred wood, and gravel in the hole for drainage.
- The tie beams: lash the tops of the stilts with beams around the perimeter and across. Lash with vine exactly as it is — it needs neither soaking nor twisting. Tighten the knots again a day later: vine dries and shrinks.
- The deck from split bamboo or poles with a finger's gap between them.
- The roof frame before the walls. In the tropics the roof comes first: you can work under it in any downpour.
- Thatching: palm leaves are folded in half over a pole and threaded on tightly, rows going bottom upward with a two-thirds overlap. The ridge gets its own separate folded row.
- Walls and mats come last. Leave one side open, on the lee side.
- Check it in the first downpour and weave over the places where it drips. The roof will have to be renewed every season — that is normal, not a defect.
Bamboo is the best building material in the guide. Ready-made pipes for water, vessels in the internodes, light strong poles, split it and you have a board, a splinter and you have a cutting edge. It has to be cut right at the ground and in the dry season: cut in the rains, it is quickly eaten by beetles.
A hammock is not laziness but engineering. If you are short of material, start with a hammock under a cover: it solves the same problem of getting off the ground in half a day instead of three weeks.
What kills a house in the tropics
Smoke, air and the door
Door
A tropical downpour delivers in an hour as much water as falls in a month in a temperate climate. A creek becomes a river within minutes.
What to do: camp always two heights of a man above the bank, and not on an island and not on a spit. If you hear a roar or see the water turn muddy — up the slope immediately, not along the channel. Do not cross a flow deeper than your knee: in muddy water you can see neither the bottom nor the snags.
The wind fells trees and tears roofs off, and behind it comes a wall of rain.
Signs: a sharp drop in pressure (your ears block), a long swell on the water, an unusually bright sunset, birds moving inland.
What to do: get away from the shore and from tall trees, tie everything down. The calm in the middle is the eye of the storm, not the end of it. In 20–60 minutes the wind comes back from the opposite side, and that is what kills the people who went out to tidy up.
After long rains a water-saturated slope slides off whole, often at night.
Signs: new cracks in the ground, trees and posts leaning over, streams that were clear turning muddy, a dull rumble.
What to do: do not put your house under a steep slope or at the foot of a gully. At the first signs — move sideways off the slope, not down it.
Безопасного положения снаружи нет. Уходите к капитальному зданию или закрытому автомобилю; не стойте под одинокой пальмой, у воды, на открытом месте или рядом с металлом. Если укрытия нет, продолжайте уходить от самых высоких объектов и разойдитесь группой. Возвращайтесь наружу через 30 минут после последнего грома.
Many tropical islands are volcanic.
What to do: go across the wind and sideways out of the valleys — flows and mudslides come down the valleys. Ash: cover your face with wet cloth, protect your eyes, do not run (ash clogs the lungs when you breathe fast), sweep it off the roof or the weight will bring the roof down. Ash plus rain turns into cement.
Water after an ashfall is acid and unusable — use closed supplies.
Relevant on coasts and islands.
The sign that is worth more than any warning: the water has suddenly gone out from the shore, leaving the bottom bare. You have minutes.
What to do: upward immediately — to high ground or at least to the upper floors of a solid building, at a run, not back for your things. There is more than one wave: the later ones are often higher than the first, and you have to wait for hours.
Wet limestone erodes fast, and the tropics are rich in caves and sinkholes covered over by vegetation. Voids under a mat of roots are a danger of their own: a green carpet on top, nothing under it.
Signs: rounded depressions, water disappearing underground, a hollow sound, vegetation that sags under your foot. What to do: in unfamiliar thickets walk probing the ground with a stick, especially after a downpour. Do not go down into caves and sinkholes: there is water, slippery rock and no air there, and they are inhabited as well.
- Time — leave straight away, not after packing.
- Distance — every step away from the source cuts the dose.
- Shielding — any mass between you and the source: earth, stone, water, a wall.
Nuclear
The forest canopy holds back part of what falls, but then shakes it off with the very first downpour. You cannot dig a dugout here — water. Which means shelter is mass around you: a rock niche, a thick wall, the basement of a solid building if there is one.
- The downpour is your ally: it washes what has fallen off the foliage and the soil faster than in any other biome. After a few heavy rains the surface becomes noticeably cleaner.
- Do not collect rainwater in the first days — it carries everything that was in the air and on the roof.
- Leave clothes and boots outside, wash in running water.
- Food: wash and peel fruit from trees, root vegetables are safer than leaves, fish from running water are safer than fish from standing water.
Chemical
Heavy gases run down into hollows and linger in unventilated thickets. Go upward, onto an open slope, across the wind. Damp air holds many substances longer than dry air does — reckon on the cloud lasting several times as long as it would in the desert.
Breathe through wet cloth, and once you are out, undress and wash. Tropical heat makes you want to take your protection off — do not, until you are out of the zone.
Biological
This is the main danger of the biome, with no weapon involved at all. Even in quiet times the tropics give you fevers, gut infections and parasites; when daily life breaks down, an outbreak starts within days.
- Boil all water, always. No exceptions — that is the rule of the tropics generally.
- The latrine far from water and from the dwelling, and bury what goes into it. After a downpour, everything lying on the surface ends up in the stream.
- Standing water near camp — get rid of it. Any puddle, any vessel with water in it, means mosquitoes, and mosquitoes in the tropics are more dangerous than all the big animals put together.
- Isolate anyone who falls ill, one person looks after them, separate dishes and towel.
- Do not eat carrion and do not touch dead animals.
Path A — with bare hands
You know everything humanity knows, but you have nothing except your hands and what grows around you.
The first year
- A platform off the ground, a roof against the downpour, smoke against the mosquitoes — the first day.
- Water from bamboo, boiling with no exceptions, foot care — from day one and for good.
- Stilt house — 2–4 weeks if you have bamboo.
- Traps, fishing, fruit. Hunger comes later here than infection does.
Three years
- A bamboo economy: gravity-fed water pipe, vessels, furniture, ladders, fences.
- A garden all year round — the only biome with no dead season.
- Smoking as a necessity: without it meat spoils within hours.
- A blowgun, pit traps, fish traps on the river.
The ceiling, and an honest limit
- Achievable: roomy dry housing, food all year round, pottery, cloth, a dugout boat.
- Out of reach: everything that has to be stored. Damp and mould eat your supplies, termites eat your buildings.
- The main limit is not technology but health: one neglected scratch wipes out a year of work.
The bottleneck of this biome
Rot and infection. The tropics do not kill you with hunger — they kill you by the fact that everything spoils: food, wood, cloth, leather and your feet.
Path B — on what is left
The same place, but within a day's walk there is something people abandoned. That does not cancel self-reliance — it only speeds it up.
What to look for here specifically
- Plantations and villages — machetes, pots, nets, jerricans, salt.
- Rivers are the roads of the tropics: abandoned boats, motors and cable lie by the water.
- Metal of any kind: it rusts faster here than anywhere, so take it and grease it straight away.
- A mosquito net and a tarpaulin are a find on a par with food.
What that unlocks
- A machete is the most useful object in the tropics. On its own it replaces half of a stone toolkit.
- A mosquito net cuts the biome's main risk directly.
- A pot = boiling with no contrivances, which means no gut infections.
The trap on this path
In the tropics finds do not just lie there — they fall apart. Metal rusts, cloth rots, electronics are dead within a season. Plan path B as a one-off boost, not as a reserve.
The ceiling by year
| Timescale | With bare hands | On salvage |
|---|---|---|
| Year 1 | A stilt house, water, traps; health above all | The same in a week + a machete and a net |
| Year 3 | A bamboo economy, a garden, smoking, a boat | Tools and nets: fishing and building at another level |
| Year 10 | A stable way of life for a family — a ceiling higher than the forest's | The same; by then the metal has mostly corroded away |
Protecting yourself and your family
Children in the tropics. A daily check — feet, between the toes, every scratch. Anything that bit or scratched gets treated at once. Sleep only under a net or under smoke. And the water rule: drink only what has been boiled, always, with no exceptions — here it saves more often than anything else.