u.s. geological survey

In 1893, young geologist Thomas Jaggar joined Arnold Hague’s expedition to map the Absaroka Mountains east of Yellowstone. Their 77-day journey through Wyoming’s rugged terrain documented the geology of what would become Shoshone National Forest, producing some of the earliest photographs and scientific records of this remote region.

Guided by a pair of Kentuckians, four blindfolded investors rode south from Rawlins toward the Colorado border in June 1872. Their objective, they thought, was a vast, secret field of diamonds, but they lost nearly all the money they’d put in and the swindlers got away—for a time.

In 1869 and 1871, John Wesley Powell led two expeditions from Wyoming Territory down the Green and Colorado rivers. These and other explorations brought him to a profound understanding of how the West’s aridity limits its economic prospects. He directed the U.S. Geological Survey from 1881-1894, and his ideas still affect land and water policy today. 

No logging, no grazing—even no trespassing? The Yellowstone Timber Land Reserve, the first land to be set aside in what evolved into today’s National Forest system, had a distinctly different character from its successors. Here’s why.