Is Buffalo Mountain a dormant volcano?   Take it from geologist Garry Zabel, professor emeritus at Colorado Mountain College: no, that big, rounded, pockmarked peak never blew its top. And you’ve just got to look at the rock to know.  “It’s composed out of granite, which is an igneous intrusive rock, meaning that magma was intruded … Continue reading The truth beneath Summit County’s ‘volcano’