Devils Tower

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Devils Tower is a natural stone formation that rises 1267 feet in the Black Hills of

northeastern Wyoming. President Theodore Roosevelt proclaimed Devils Tower the first

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US National Monument in 1906.

Nobody knows how this unusual rock was formed, but geologists have put forth several

theories. They agree that Devils Tower is an “igneous intrusion”, which is magma that

hardened while still underground. This may have happened 60 million years ago, which

is when the Rocky Mountains were forming too. Scientists disagree about how this

magma eventually came to tower so high above its surroundings. A popular theory sets

Devils Tower as the neck of an old volcano. In this theory, the rest of the mountain

eroded away.

Weather continues to erode the tower. Cracks fill with ice and expand, and rocks then fall

to the ground. Piles of broken lava columns at the base of the tower indicate that it used

to be larger.

Native Americans also have stories to explain Devils Towers. In their stories, the tower is

called Mateo Tepee, meaning Grizzly Bear Lodge. The rock’s long vertical cracks

reminded people of scratches that a bear might make. In a Kiowa story, for example,

seven little girls were playing far from their village when bears started to chase them. The

girls ran to a small rock and prayed for it to save them. The rock started to push upwards,

higher and higher until the girls were out of the bears’ reach. The bears scratched at the

rock and broke their claws. The Kiowa say that these little girls were pushed upward to

the sky; they now form a seven-star constellation. Another version of the story has little

boys chased by bears, and an eagle carries them home from the tall rock.

Devils Tower appears insurmountable to many. Henry Newt, who was part of area’s first

geological survey, wrote in 1875: “Its summit is so entirely inaccessible that the energetic

explorer… standing at its base could only look upward in despair of ever planting his feet

on the top.” Nonetheless, a Wyoming rancher named William Rogers ascended the tower

in 1893; he climbed up with the aid of wooden pegs that he’d drive into cracks. A more

professional ascent was made in 1937 by a small party representing the American Alpine

Club. The climb can be made relatively easy or extremely challenging according to the

path someone chooses.

The tower is still sacred to several Native American Plains tribes, including the Lakota

Sioux, Cheyenne, and Kiowa. There have been conflicts between tourists who want to

climb the tower and indigenous people who hold ceremonies around the monument.

There is now a compromise that involves a voluntary climbing ban in June, which is

when the tribes traditionally use the tower most. This compromise has not satisfied

everyone, since climbers see the rock as federal land and Native Americans see ascension

of the monument as desecration. About 4,000 people climb Devils Tower every year.

According to a PBS documentary called In Light of Reverence, most agree not to climb

during the month of ceremonies.

The region is also known for its colorful rock layers. The oldest visible rocks have been

dated to the Triassic period, or about 200 million years ago. These are dark red sandstone

and siltstone, colored by oxidized iron. A thin white band of Jurassic-era gypsum follows.

People can also spot gray-green shale, red mudstone, and yellow sandstone.

The United States was probably first aware of Devils Tower after an 1859 Yellowstone

expedition led by Captain W. F. Reynolds. In 1875 Colonel Richard Dodge led a

geological survey to the rock. It was Dodge who named Devils Tower; he thought that

natives called it “Bad God’s Tower”. Congress designated the area a US forest reserve in

1892, and by 1906 it was the country’s first national monument. In addition to the tower,

the park includes the Belle Fourche River and 1347 acres of pine forests and grasslands,

home to deer, prairie dogs, and other animals.


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