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Black Hills

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The Black Hills is an isolated mountain range in North America.

Black hills from space
Black hills from space

It rises from the Great Plains in western South Dakota and extends into Wyoming. The range appears dark from a distance because it is covered in evergreen trees. It contains the Black Hills National Forest. The highest point in the range is Black Elk Peak. This summit is also the highest point in the United States east of the Rocky Mountains.

The geology of the region is quite complex. The current landscape is the result of an upwarping of ancient rock. This upwarping was a mountain-building episode that caused the land to rise. After the land rose, stream erosion removed the higher portions of the mountain mass. This process created the topography seen today. The rock layers are arranged like a target or a bull's eye. This shape is an oval dome where different rings of rock dip away from the center.

The center of this target is known as the granite core. This core was formed by magma during the Trans-Hudson orogeny. The granite in this core is approximately 1.8 billion years old. Some localized deposits in the northern hills are even older, dating to 2.2 or 2.8 billion years. Surrounding the core is a metamorphic zone. This zone contains rocks that were originally sedimentary. A collision between the North American continent and another landmass called a terrane caused these rocks to fold and twist. This event was the Trans-Hudson Orogeny.

Black Hills angular deformity
Black Hills angular deformity

Indigenous tribes have a very long history in this region. Scientists use carbon-dating to study the age of tools found there. These tools show a human presence dating back to 11,500 BC with the Clovis culture. Many tribes, including the Cheyenne, Crow, Kiowa, and Arapaho, have lived in the area. The Lakota people arrived from Minnesota in the 18th century. They displaced other tribes and called the land Pahá Sápa, or Black Mountains.

Inyan-Kara
Inyan-Kara

To the Lakota and Cheyenne, the hills are the axis mundi, or the sacred center of the world.

The history of ownership changed significantly in the 19th century. In 1868, the US government signed the Fort Laramie Treaty. This treaty established the Great Sioux Reservation and promised the Black Hills to the Sioux forever. However, in 1874, George Armstrong Custer led an expedition to the area. His team discovered gold in French Creek.

Custerblackhills
Custerblackhills

This discovery triggered a massive gold rush. Following the Great Sioux War of 1876, the US government took control of the hills. The Lakota were forcibly relocated to smaller reservations.

Legal battles over the land continued for many years. In 1980, the Supreme Court ruled in United States v. Sioux Nation of Indians. The Court decided the land had been illegally seized. The government was ordered to pay the initial price plus interest. This amount was nearly $106 million. The Lakota people refused to accept the money. They want the land returned rather than receiving payment. As of 2011, the award with interest was worth about $1 billion.

Homestake works mine 1889
Homestake works mine 1889

Today, the economy of the Black Hills has shifted. It has moved away from mining and timber toward tourism and hospitality. Locals often divide the region into the Southern Hills and the Northern Hills. The Southern Hills feature Mount Rushmore, Wind Cave National Park, and Jewel Cave. It also contains Custer State Park, the largest state park in South Dakota.

Black Hills, Mount Rushmore National Park
Black Hills, Mount Rushmore National Park

The Northern Hills include Spearfish Canyon and the historic town of Deadwood. Every August, the area hosts the Sturgis Motorcycle Rally. In 2015, the 75th anniversary of the rally saw over one million visitors.

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🖼️ Images & Media (12)
File:Black hills from space.jpg
Black hills from space.jpg
File:Custerblackhills.jpg
Custerblackhills.jpg
File:Prairiecabin.jpg
Prairiecabin.jpg
File:Inyan-Kara.jpg
Inyan-Kara.jpg
File:Gold-quartz placer nugget, Lead SD.jpg
Gold-quartz placer nugget, Lead SD.jpg
File:Black Elk Peak hike 03.jpg
Black Elk Peak hike 03.jpg
File:Black Hills angular deformity.jpg
Black Hills angular deformity.jpg
File:Fallingrock.jpg
Fallingrock.jpg
File:Sylvan Lake 2017 black hills.jpg
Sylvan Lake 2017 black hills.jpg
Black Hills National Forest Districts Map.pdf
File:Black Hills, Mount Rushmore National Park.jpg
Black Hills, Mount Rushmore National Park.jpg
File:Homestake works mine 1889.jpg
Homestake works mine 1889.jpg
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