__ Plain, Flat Expanse of the Deep Ocean Floor
This page is the CodyCross answer for the clue below from Hobbies, Group 1415, Puzzle 1 (Robot Combat).
Question is: __ Plain, Flat Expanse of the Deep Ocean Floor
and the answer is: ABYSSAL
Word Meaning:
ABYSSAL — (archaic) Belonging to, or resembling, an abyss; unfathomable.
Definitions from Wiktionary.