Lesson Summary: Collective warm point preparation for injured canyoneer. In remote canyons, it's essential to prepare a shelter that provides warmth and protection for an injured person. The shelter should form a closed space that allows the injured to lie down, while the Expert canyoneer can access them without letting in cold drafts. Aluminized plastic is ideal as it reflects heat and keeps the shelter rainproof. Alternatively, a tent’s double roof can be adapted with a suspension system. For optimal placement, avoid flat surfaces like beaches. Instead, find a location that allows cold air to drain away, such as a slope or canyon. The injured should be placed at a higher point to stay in the warm air bubble. The Expert canyoneer should access the shelter from below to avoid losing heat. Using large boulders and pebbles, create a stable base and use candles with long wicks for heat. This method ensures warmth and safety in cold, emergency situations.