Water
Solar still basics
A solar still gives small amounts of clean water at a large cost of sweat.
Von Malegowski — Solar Still
Step-by-step
Dig a pit two feet wide and a foot deep in a sunny spot with damp soil or green vegetation.
Place a container in the center; line the pit with green plants around it.
Cover the pit with a clear plastic sheet and seal the edges with soil.
Set a small stone on the plastic directly over the container to form a low point.
Water condenses on the underside, runs to the low point, and drips into the container.
Tip: Yield is small — a still is a supplement, not a plan. Dig it only if you're already staying put.
Related outdoor skills
Educational reference only. Wilderness conditions change fast — practice in low-stakes settings, take a certified wilderness first-aid course, and confirm regional regulations before you rely on any of these skills in the field.