Grove Karl Gilbert, known by the abbreviated name G. K. Gilbert in academic literature, was an American geologist.
Grove Karl Gilbert
Headward erosion of a gully; photo by G.K. Gilbert
Gilbert's 1893 drawing of sculpture around Mare Imbrium
Derailed train after the 1906 San Francisco earthquake; photo by G.K. Gilbert
The Henry Mountains is a mountain range located in the southeastern portion of the U.S. state of Utah that runs in a generally north-south direction, extending over a distance of about 30 miles (48 km). They were named by Almon Thompson in honor of Joseph Henry, the first secretary of the Smithsonian Institution. The nearest town of any size is Hanksville, Utah, which is north of the mountains. The Henry Mountains were the last mountain range to be added to the map of the 48 contiguous U.S. states (1872), and before their official naming by Thompson were sometimes referred to as the "Unknown Mountains." In Navajo, the range is still referred to as Dził Bizhiʼ Ádiní.
Peaks in the Henry mountains viewed from a high mountain road
The Henry Mountains dominate the center of this view, a lower-resolution, cropped image from the Image Science & Analysis Laboratory, NASA Johnson Space Center. Lake Powell and the Colorado River are to the south, and the Waterpocket Fold is to the west.
Mt. Pennell as seen from Lake Powell.