Sudden Washout is a cave in Forsaken Airfield.
Overview[]
The cave is located to the western most section of the map, south of Mindful Cabin, and directly west of Final Approach in the mountains (past another Warm Cave).
The cave itself is very easy to miss, as its entrance is located in a depression, likely created by heavy rainfall -- hence the name. The cave is not far from a Rope Climbing section that leads down to the main plain. A few Rose Hip bushes may be found growing near the entrance, and Coal can be found inside, along with assorted low-tier loot.