The Bottom of a Still Body of Natural, Fresh Water
This page is the CodyCross answer for the clue below from Underground Worlds, Group 2164, Puzzle 5 (Bedrock Ridges).
Question is: The Bottom of a Still Body of Natural, Fresh Water
and the answer is: LAKEBED
Word Meaning:
LAKEBED — The bottom of a lake, especially after the lake has gone dry.
Definitions from Wiktionary.