Type of Object That May Meet an Unstoppable Force
This page is the CodyCross answer for the clue below from Making a Documentary, Group 1511, Puzzle 1 (Unsolved Mysteries).
Question is: Type of Object That May Meet an Unstoppable Force
and the answer is: IMMOVABLE
Word Meaning:
IMMOVABLE — incapable of being physically moved; fixed
Definitions from Wiktionary.