Narrow Opening Caused by the Separation of Rocks
This page is the CodyCross answer for the clue below from Earth, Group 13, Puzzle 3.
Question is: Narrow Opening Caused by the Separation of Rocks
and the answer is: FISSURE
Word Meaning:
FISSURE — A long, narrow crack or opening made by breaking or splitting, especially in rock or earth.
Definitions from Wiktionary.