Geology & Natural History

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Title Article Type Author
Absaroka Mountains, mining in Encyclopedia Brian Beauvais
Alcova Dam and Reservoir Encyclopedia Annette Hein
American Indian geography in Wyoming Encyclopedia Gregory Nickerson
Anchor Dam, History of Encyclopedia Annette Hein
Archeology, alpine in Wyoming Encyclopedia Rebecca Hein

Since the late 1940s, birders in Casper and around the state have pursued annual Christmas bird counts, providing reams of data for a fast-changing world. Rising early and working late, birders live to listen, watch and learn—and the birds keep flying.

No landscape is beyond the reach of history. The wilderness of the Absaroka Mountains, bordering the west side of Wyoming’s Bighorn Basin, is no different. Evidence of early mining activity still endures in isolated pockets, and searchers can still find cabin ruins, tailings and a few crumbing tunnels.

Historian, botanist, teacher and rancher Vie Willits Garber grew up in Big Horn and in 1910 earned a master’s degree in two disciplines from the University of Wyoming. She was the first person to carefully map and document the route of the Bozeman Trail—and she identified and listed 615 plants in the Little Goose Valley near her family’s home.

After Yellowstone rangers slaughtered 4,300 elk in 1961 to try and control overpopulation, hunters, outfitters and the public were enraged. In response, zoologist Starker Leopold, son of famed naturalist Aldo Leopold, wrote a groundbreaking report for the National Park Service that advocated systematic, scientific management of natural areas—a revolutionary approach at the time.

A Nobel Prize, big business and scientific breakthroughs including Covid-19 tests and vaccines were decades in the future when microbiologist Thomas D. Brock began taking samples from Yellowstone Park’s hot springs in the summer of 1964.

When present Wyoming was still part of Dakota Territory, hunters already were killing elk, deer and antelope by the thousands, often to sell the meat and hides. Tentatively at first and then more strongly, Wyoming territorial and state legislatures began passing game laws—and providing for their enforcement.

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 the cold winter of 1831-32, 21 fur trappers survived—in fact thrived—on the Laramie Plains, but it was another matter for their horses. One of the men was 22-year-old Zenas Leonard. He had left the family farm in Pennsylvania after announcing “I can make my living without picking stones.” 

Wyoming’s trails, roads and highways follow centuries-old Native American hunting and trade routes. For generations, Shoshone, Arapaho, Cheyenne, Ute, Lakota and Crow people gathered plants, visited family and tracked game along watercourses and over mountain passes in the seasonal subsistence patterns of their lives.

Tribal sovereignty, retained by the Eastern Shoshone and Northern Arapaho since before Wyoming statehood,governs wildlife conservation on the more than two million acres of tribal lands on the Wind River Indian Reservation. Game populations have increased steadily since a tribal game code was adopted in 1984.