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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for obsidian's source

Answer	Clue
LAVA	Obsidian source
LAVAS	Sources of obsidian
LAVA	Source of obsidian
LAVA	Obsidian's source
LAVA	Source of obsidian or pumice