A poorly chosen shelter turns an uncomfortable night into a genuine hazard, well before the pitching technique ever comes into play.
- Site choice matters more than pitching technique: no dead tree overhead, clear ground, dry wood nearby
- A tarp strung between two trees stays the fastest, most reliable structure to learn
- A bed of dry branches on the ground protects from cold more than any layer pitched overhead
Contents
Site choice, before the tarp even comes out
Three things get checked before the first stake goes in, in that order every time. No dead tree nearby, standing or leaning, and no large dead branch still caught in the canopy above the chosen spot: the risk of it coming down in the wind overnight is nothing theoretical. Clear enough vegetation around the site avoids fighting brambles or saplings while pitching a tarp properly. And spotting dry wood within easy reach before settling in saves an extra trip once it’s dark. A cave or rock overhang often looks like an easy shortcut, but it hides risks that get underestimated fast, see our article on why you should never shelter in a cave.
Pitching a tarp between two trees, the base technique
Two trees spaced roughly 3.5 to 4 meters apart, a distance measured directly with an arm span rather than a tape measure, form the simplest structure to pitch. The tarp (a lightweight waterproof sheet) gets tensioned between them with cordage, leaving enough of an angle for rain to run off rather than pool into a sagging pocket.
Two pitching tricks that make a genuine difference in the field: prepping a loop with a stick slid through it at each anchor point lets the whole setup come down in one motion, instead of fighting a knot that’s swollen with moisture. The prusik knot (a sliding knot that locks under tension and releases by hand) stays the best option for tensioning a tarp with carabiners, with fine adjustment possible without redoing the whole thing.
More articles on WildSurvival
- Where to Find Water in the Wild Before Filtering It
- How to Find Food in the Wild Without Risking Your Health
- Surviving in the Forest, the Basics That Shift by Biome
Four configurations depending on the weather
The same tarp pitches differently depending on conditions. Each configuration has its own logic, and its own trade-off.
Lean-to (flat tarp, single angled panel)
- Fast to pitch, fine for calm weather
- Limited protection if the wind shifts overnight
A-frame (two panels)
- Good side protection against a wind that changes direction
- Needs a sturdier central anchor point
Teepee setup (tarp cinched around a high point)
- Excellent water runoff, almost no pooling possible
- Smaller interior space, less comfortable over multiple nights
Closed shelter (tarp folded down to the ground on the sides)
- The best wind and cold protection of the four
- The longest to pitch, saved for the roughest nights
What actually protects from cold is the ground
The ground pulls heat from the body far faster than the surrounding air, even on a night that would feel mild in daylight. A bed of dry branches and leaves packed between the ground and the body changes everything, before the thickness of the tarp overhead even factors in. This step almost always gets tackled after the shelter goes up. It should come first.
The small details that change everything
If a fire is lit inside or right at the entrance of the shelter, a vent opening at the top prevents smoke buildup. No room for guesswork here: it’s a genuine carbon monoxide risk in a semi-enclosed space. A foil emergency blanket stays protected rolled tight « like a piece of candy » rather than left flat, since its extreme fragility doesn’t forgive a single snag, and it always goes on the side sheltered from the wind rather than facing it. When a night out is planned ahead, a bivy bag takes over: built as a shelter in its own right, it replaces the tent for a single night.
One last simple habit worth building: hang a pack from a carabiner rather than leaving it on the ground. One move, two problems solved: morning damp and an unwanted nighttime visitor.
A shelter only does one thing: it turns the night into recovery time instead of a night spent just enduring. These basics connect straight back to the shelter section of our hub on the basics of wilderness survival, and the gear baseline for putting them into practice is covered in our 72-hour survival kit guide. With no tarp on hand at all, a debris hut remains the most insulating alternative using only what the forest provides.