Preview Steine.jpg

Colorful volcanic rocks including pumice and obsidian, Puyehue national park, Chile

File: Steine.jpg

Title: Colorful volcanic rocks including pumice and obsidian, Puyehue national park, Chile

Colorful volcanic rocks including pumice and obsidian, Puyehue national park, Chile

Credit: Gerhard Hüdepohl / atacamaphoto