what does the checkpoint flag do in peak

The Checkpoint Flag in Peak is a one-time, plantable checkpoint that lets an unconscious or about-to-die player respawn next to the flag instead of becoming a ghost. After it triggers (by death), the flag disappears. It’s designed to give you or your team a chance to retry a tricky section without starting over from the bottom, and it must be replanted if you enter a new biome or load a new area.