Fire Types by Purpose: Signal, Cooking, Heat, Stealth

Build a long fire by laying two parallel logs 12-18 inches apart and placing kindling between them. Stack firewood perpendicular across the two logs, creating a log-cabin effect. This configuration provides steady heat for 3-4 hours and allows you to push burning wood toward the center as outer pieces burn. Ideal for group warmth or sustained cooking without constant tending.

Ensure logs are green or partially cured to prevent rapid collapse; test stability before lying near fire

Arrange five substantial logs in a star pattern with their ends meeting at a central point, leaving gaps between logs. Light kindling at the center where logs meet. As the fire burns, slide each log inward to feed the flames—the fire consumes only the log ends, making this the most fuel-efficient design. Can burn continuously for 4-6 hours with one set of logs.

Logs must be at least 3-4 inches in diameter; thinner wood burns too quickly and collapses the star formation

Stand 8-12 thin dry branches (pencil to thumb thickness) upright in a cone shape, leaving a small opening for ignition. Fill the center cavity with tinder and fine kindling. Light from the opening, and flames will quickly climb the branches. This design reaches cooking temperature in 5-10 minutes and concentrates heat upward—ideal for boiling water or cooking food in a hanging pot.

Use only dry wood; wet or green branches won't maintain the cone structure and will smother the fire

Dig two connected holes: one vertical hole (6 inches diameter, 12 inches deep) for fire, and a second angled hole 18-24 inches away that slopes down to meet the first. Place kindling in the vertical hole and light it. The angled hole draws air underneath the fire, creating strong draft with minimal visible flames—the fire burns nearly smokeless and invisible from above. Perfect for undetected warmth or cooking.

Dig in loose, well-drained soil; do not attempt in wet ground or clay (will collapse). Ensure the angled hole angles upward into the vertical hole to create proper airflow

Build a long fire (see Step 1), then place a reflector wall behind it using flat stones, logs, or a natural rock face at a 45-degree angle behind the fire. This wall reflects radiant heat back toward your shelter or sleeping area, effectively doubling perceived warmth. Position your fire 4-6 feet from shelter with the reflector angled to direct heat into your camp.

Keep reflector 12-18 inches from heat source to prevent ignition; green wood or stone is safer than dry materials

Build a large, visible fire platform on the highest local elevation using a long fire structure (Steps 1-2). Gather green branches, wet leaves, or pine boughs (smoke generators) before igniting the main fire. Once the base fire is burning vigorously, layer green materials on top to produce thick, visible smoke. Arrange fire in a triangle (universal distress symbol) visible from above, creating smoke signals every 1-2 hours during daylight.

Never leave signal fire unattended; always have water or clearing space available to suppress flames. Confirm fire is fully extinguished before leaving the area

Establish a bed of coals (white ash layer, 2-3 inches deep) by burning hardwood first for 30-45 minutes. Create three zones by positioning cookware at different distances: direct zone (6-8 inches above coals, 350-400°F for searing), medium zone (10-12 inches, 250-300°F for simmering), and cool zone (14-16 inches, 150-200°F for keeping food warm). Rotate pots between zones to manage cooking speed without direct flame burning food.

Allow wood coals to fully mature (white ash cover) before cooking; black coals produce carbon monoxide and burn food

Build a long fire (Step 1) on a bed of large flat stones (6-8 inches diameter, 4-6 inches deep). Heat stones absorb radiant warmth for 2-3 hours after the visible flames die. Place heated stones in cloth wrapping around your shelter or sleeping space. Replace stones every 3-4 hours as they cool. This system provides prolonged heat without continuous wood feeding—critical in cold survival situations.

Allow stones to heat gradually to prevent cracking (drench in water once, then slowly warm); use medium-sized round stones; avoid wet riverbed stones (explosive expansion)