Mount Pennell, Utah, USA
Mount Pennell is in the famous Henry Mountains of east-central Utah, where it ranks second in height. The Henry Mountains are famous among geologists because, in the 1870s, G. K. Gilbert made pioneering observations of the lava intrusions there (laccoliths) and the effects they made on the overlying rocks. Gilbert's notebooks contain many sketches and observations of Mount Pennell. The Henry Mountains are one of the most remote ranges in the 48 states.