A new swarm of earthquakes has developed near a dormant volcano in South California / North Mexico along the Mexicali border region. The volcano in question is a dormant Butte named “Cerro Prieto”. Clearly this volcano has a recent eruptive past (geologically speaking). A closeup view of the volcano shows black basalt , and igneous rock fanning out from the cone of the butte. 

Compared to other dormant butte volcanoes in the area, this cone appears to have erupted in the past few hundred years or less. This dormant volcanic movement in Baja California follows other movement which occurred at another series of dormant volcanoes up the West coast over the past few days. Noteworthy earthquake activity occurred yesterday (May 27, 2015) in Northern, and Southern California. Both sets of earthquakes near obvious volcanic locations. FULL REPORT