Deep, Narrow-Sided Valley Alongside a River
This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1181, Puzzle 3 (Human Innovation).
Question is: Deep, Narrow-Sided Valley Alongside a River
and the answer is: RAVINE
Word Meaning:
RAVINE — A deep narrow valley or gorge in the earth's surface worn by running water.
Definitions from Wiktionary.