USGS geologists view the informational sign at the quarry upper overlook in July 2024.
USGS geologists view the informational sign at the quarry upper overlook in July 2024.USGS geologists view the informational sign at the quarry upper overlook in July 2024. The sign describes the history of Professor O.C. Marsh and Marshall P. Felch, the namesakes of the quarry, who worked together to excavate and study dinosaur bones. The sign features a photograph by Israel Cook Russel, a USGS Geologist, in July 1888.
