Strange giant sand castle on beach after storm
from the cover:
Castle Crab is a mysterious fortress of sand like a giant chldrens sand castle. Found after a strange storm the castle will only last until the next high tigh destroys it. Find the children foolishly exploring inside.
An adventure location with random generation. The scenario notes are nominally compatible with older editions of D&D.
The PDF is designed to be printed and folded as a pocketmod.