The Mexico City-Puebla highway skirts the northern margin of a voluminous lava flow from Papayo volcano, a lava dome whose rounded summit appears above the horizon to the SW above the trucks to the right. The dome produced massive lava flows that cover an area of 84 km², with a volume of about 21 km³. The flows display transverse arcuate pressure ridges, and lateral levees.

Photo by Lee Siebert, 1999 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Papayo