Pillow andesite from a lake main content.

Pillow andesite from a lake

Part of Hall of Planet Earth.

Pillow andesite from a lake

Exhibition Text

This pillow is from the Xitle volcano, on which part of Mexico City is built. It formed when lava flowed into a man-made reservoir.

Provided by Prof. Hugo Delgado Granados, University of Mexico

For Educators