Long Canyon-Like Grooves on the Moon's Surface

This page is the CodyCross answer for the clue below from Deserts of the world, Group 1617, Puzzle 3 (Archaeological Finds).

Question is: Long Canyon-Like Grooves on the Moon's Surface

and the answer is: RILLES

Word Meaning:

RILLES — plural of rille

Definitions from Wiktionary.

Long Canyon-like Grooves On The Moon's Surface - Deserts of the world CodyCross Answers | CodyCross Solutions