Cuexcomate is an inactive geyser in Puebla city, Puebla state, Mexico. The sinter cone that the geyser built up around its vent is 13 metres tall and has a diameter of 23 metres. A central crater within the cone is up to 8 metres wide and 17 metres deep below ground level).
Historically, Cuexcomate has been cited that the geyser was formed before the 1064 eruption of popocatépetl, an active volcano and the second highest peak in Mexico, which likely activated geothermal spring circulation that cut upward through the Mesozoic limestones and storage of geysers and springs around it. Geysers rock composition is 99% calcite, thus differing from the typical silica sinter deposits.
Cuexcomate was erroneously referred to as the smallest volcano in the world, due to the popular belief that it really was a volcano, relying only on the structure, however, it is not a Volcano. Today, there is a metal spiral staircase that allows tourists to descend into the excavated interior of the structure of the cultural events periodically.
The name is from the Nahuatl for "pot" or "storage".