With a crest near 10,000 feet, this treeless fault-block mountain in eastern Oregon provides stunning views and spectacular glacial landforms.

See Hoover Dam and the bypass bridge from a perspective usually off-limits to the public, and float the upper part of the Black Canyon National Water Trail.

This incongruous small ferry across the Willamette River north of Salem, Oregon has been operating continuously since the 1850s.

In 1954, two enormous earthquakes occurred just minutes apart, resulting in prominent scarps that extend for miles along the range fronts.

The steepest tramway in North America provides stunning views of the out-of-the-way Wallowa Mountains in northeastern Oregon.

This settlement on the original Transcontinental Railroad began by harvesting timber, but transitioned to a forgotten 19th-century industry: harvesting ice.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

An out-of-the-way state park in Oregon that features both a picturesque waterfall and the ruins of a hydropower plant.

A little-known occurrence of fossil wood in northern Washoe County, Nevada, near the Black Rock Desert.

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

This large artificial waterfall in Washington state was merely an incidental byproduct of a technological megaproject.

It's safe—and permitted—to walk across these twin natural sandstone arches.

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

Now a city park, this site started as a stage stop, then was a working ranch, and finally became a dude ranch that specialized in letting wannabe divorcees establish Nevada residency.

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

A hidden slot canyon in the southern Nevada desert makes an unexpected oasis and scenic hike.

This small town was built around a marble quarry and named after one of the most famous sources of marble in the world.

A spectacular but little-known slot canyon in extreme northern Nevada, with sheer walls nearly 500 feet high and a perennial stream.

On October 26, 1963, a 12-kiloton nuclear device was detonated here in granite some 1,211 feet below the ground surface.

In one of the hottest parts of the Mojave Desert, shallow bedrock forces the typically dry Mojave River to the surface in this canyon, providing a vital oasis for humans and wildlife.

An ill-fated attempt to grow wheat in the sagebrush steppe of northeastern Nevada.

Located in the remote Monitor Valley, this travertine bowl contains a scalding pool of water.

As fallout from an irrigation project, a formerly cottonwood-lined stream is now a sandy, desolate, post-apocalyptic channel lined with weathered stumps and tumbleweeds.

An improbable waterfall springs from an orange-white cliff face, tumbling into the headwaters of the Virgin River above Zion National Park.