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Devils Tower

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Devils Tower is a huge, lonely rock in Wyoming. It sits in the Bear Lodge Ranger District near the Black Hills. The tower rises high above the Belle Fourche River. It is a special place known as a laccolithic butte. This means it is a large, dome-shaped mass of rock. Many people travel from far away to see it.

DevilsTowerInfoSignDeer
DevilsTowerInfoSignDeer

This amazing landmark was formed a very long time ago. About 40.5 million years ago, hot liquid rock called magma rose up. It pushed into older layers of sedimentary rock. These older layers include red sandstone and white gypsum. As the magma cooled, it turned into a gray rock called phonolite porphyry. This rock has small, white crystals inside it. As it cooled, it formed many tall, vertical columns. These columns can have four, five, six, or even seven sides.

Many different groups of people have names for this place. Native American groups like the Kiowa and Lakota have special stories about it. Some call it Bear Lodge or Bear's Tipi. Others call it Tree Rock or Great Gray Horn. The name "Devils Tower" came from a mistake in 1875. An interpreter for Colonel Richard Irving Dodge misunderstood a native name. He thought it meant "Bad God's Tower."

2003-08-16 Devils Tower advisory
2003-08-16 Devils Tower advisory

History shows how important this site is to the United States. It was the very first national monument in the country. President Theodore Roosevelt established it on September 24, 1906. People have been exploring the rock for a long time. In 1893, two ranchers made the first climb ever. They used a ladder made of wooden pegs in the cracks. Today, hundreds of climbers visit every summer to scale the walls.

Nature is still changing the tower every single day. Rain and snow fall on the columns all the time. This water can freeze inside the cracks of the rock. When ice grows, it can break the columns apart. Pieces of rock fall to the bottom of the tower. These piles of broken stones are called scree. The scree shows that the tower was once much wider. Over many years, the wind and water will keep shaping it.

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File:2003-08-16 Devils Tower advisory.jpg
2003-08-16 Devils Tower advisory.jpg
File:DevilsTowerInfoSignDeer.jpg
DevilsTowerInfoSignDeer.jpg
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