Dark, Glass-Like Volcanic Rock
This page is the CodyCross answer for the clue below from Rainforest, Group 1204, Puzzle 5 (Lemurs and Agouti).
Question
Dark, Glass-Like Volcanic Rock
Answer
OBSIDIAN
Word Meaning:
OBSIDIAN — (mineralogy) A type of naturally occurring black glass produced by volcanoes.
Definitions from Wiktionary.