The Navajo Nation's Shiprock in New Mexico is the remnants of a volcano that erupted more than 30 million years ago. It's a sacred site to the Navajo people.
Shiprock, Navajo Nation, New Mexico —
The Navajo Nation's Shiprock in New Mexico is the remnants of a volcano that erupted more than 30 million years ago. It's a sacred site to the Navajo people.
A. V. Ley/Getty Images
Just a few miles east of Yosemite National Park, visitors will find tufa towers rising out of the waters at Mono Lake, a body of water more than twice as salty as the ocean.
Mono Lake, California —
Just a few miles east of Yosemite National Park, visitors will find tufa towers rising out of the waters at Mono Lake, a body of water more than twice as salty as the ocean.
Mark Newman/Getty Images
Don't worry. The goblins at Goblin Valley State Park in Utah can't get you. They're really mushroom-shaped hoodoos formed by water erosion and dust blowing across the valley.
Goblin Valley State Park, Utah —
Don't worry. The goblins at Goblin Valley State Park in Utah can't get you. They're really mushroom-shaped hoodoos formed by water erosion and dust blowing across the valley.
Nick1983/Getty Images
Grand Staircase-Escalante National Monument is another prime example of Utah's amazing rock formations, including this <a href="index.php?page=&url=http%3A%2F%2Fwww.blm.gov%2Fut%2Fst%2Fen%2Ffo%2Fgrand_staircase-escalante%2FRecreation%2Fhiking___backpacking%2FToadstools.html" target="_blank" target="_blank">Toadstool hoodoo.</a>
Grand Staircase-Escalante National Monument, Utah —
Grand Staircase-Escalante National Monument is another prime example of Utah's amazing rock formations, including this Toadstool hoodoo.
Petr Bednarik/Getty Images
Nevada's Valley of Fire State Park plays host to remarkable rock formations created by shifting sane dunes some 150 million years ago.
Valley of Fire State Park, Nevada —
Nevada's Valley of Fire State Park plays host to remarkable rock formations created by shifting sane dunes some 150 million years ago.
Eric Foltz/Getty Images
Pioneers heading west along the Mormon, Oregon and California trails would appreciate seeing the landmark known as Chimney Rock National Historic Site in Nebraska. It's the result of a volcanic eruption and millions of years of erosion.
Chimney Rock National Historic Site, Nebraska —
Pioneers heading west along the Mormon, Oregon and California trails would appreciate seeing the landmark known as Chimney Rock National Historic Site in Nebraska. It's the result of a volcanic eruption and millions of years of erosion.
Jeffrey Murray/Getty Images
The Yellowstone River gets much of the credit for the odd and beautiful rock formations at Makoshika State Park in Montana.
Makoshika State Park, Montana —
The Yellowstone River gets much of the credit for the odd and beautiful rock formations at Makoshika State Park in Montana.
Danita Delimont/Getty Images
On a clear, sunny day at Lake Huron, the not romantically-named Turnip Rock in Michigan, will overcome its name.
Turnip Rock, Michigan —
On a clear, sunny day at Lake Huron, the not romantically-named Turnip Rock in Michigan, will overcome its name.
Lars Jensen/Michigan.org
Devils Tower in northeast Wyoming, the start of the national monument of the same name, rises more impressively than any skyscraper.
Devils Tower National Monument, Wyoming —
Devils Tower in northeast Wyoming, the start of the national monument of the same name, rises more impressively than any skyscraper.
Robert Waltman/Getty Images
Catch a grand view of Pikes Peak from Garden of the Gods, some 1,300 acres of cliffs and boulders owned by the city of Colorado Springs, Colorado.
Garden of the Gods, Colorado —
Catch a grand view of Pikes Peak from Garden of the Gods, some 1,300 acres of cliffs and boulders owned by the city of Colorado Springs, Colorado.
Ronda Kimbrow/Getty Images
The so-called Chalk Monuments, a National Natural Landmark, were formed millions of years ago on the High Plains of western Kansas.
Monument Rocks, Kansas —
The so-called Chalk Monuments, a National Natural Landmark, were formed millions of years ago on the High Plains of western Kansas.
Royer/Getty Images
Revered by the Monacan as a sacred place, the Natural Bridge in Virginia was once owned by Thomas Jefferson.
Natural Bridge, Virginia —
Revered by the Monacan as a sacred place, the Natural Bridge in Virginia was once owned by Thomas Jefferson.
Shannon Hibberd/Getty Images
There are still active volcanoes at Hawaii Volcanoes National Park, demonstrating how volcanoes redefine the natural landscape.
Hawaii Volcanoes National Park —
There are still active volcanoes at Hawaii Volcanoes National Park, demonstrating how volcanoes redefine the natural landscape.
Jan Maguire/Getty Images