Rocky Mountains

The Rocky Mountains, also known as the Rockies, are a big mountain range and the largest mountain system in North America. They stretch nearly 3,000 miles from northern Western Canada down to New Mexico in the Southwestern United States. The mountains begin either in northern British Columbia or in the Alaska–Yukon border area and end near Albuquerque, New Mexico.

These mountains formed a very long time ago when several plates began moving under the North American plate. Over time, glaciers and other forces shaped the Rockies into the tall peaks and valleys we see today. After the last ice age, people began living in the region. Explorers like Sir Alexander Mackenzie and the Lewis and Clark Expedition later traveled through the area.

Today, many of the highest peaks are in Colorado, where the land is often over 6,800 feet above sea level. Public parks and forests help protect these beautiful mountains, making them popular for many outdoor activities like hiking, camping, skiing, and fishing.

Etymology

The Rocky Mountains got their name from an old Algonquian word. It comes from the Plains Cree language, where they are called "asinîwaciy", meaning "rocky mountain" or "alp". French explorers called them "montagnes de Roche", meaning the same thing. This French name was first written down in 1752 by Jacques Legardeur de Saint-Pierre. The Cree people also call the area "Aseniwuche".

Geography

See also: List of rivers of the Rocky Mountains

The Rocky Mountains are part of a big area of mountains called the North American Cordillera. They stretch from the Liard River in British Columbia down to the Pecos River, a small river that flows into the Rio Grande, in New Mexico. These mountains vary in width from 110 to 480 kilometres (70 to 300 miles). The Rocky Mountains have the tallest peaks in central North America. The highest peak is Mount Elbert in Colorado, standing at 4,401 metres (14,440 feet) above sea level. Another very tall peak is Mount Robson in British Columbia, at 3,954 metres (12,972 feet), and it is the highest in the Canadian Rockies.

The eastern side of the Rockies rises sharply above the flat lands of central North America. This includes areas like the Sangre de Cristo Mountains in New Mexico and Colorado, the Front Range in Colorado, and the Wind River Range and Big Horn Mountains in Wyoming. Other important parts of the Rockies are the La Sal Range along the border of Utah and Colorado, the Uinta Range in Utah and Wyoming, and the Wasatch near Salt Lake City in Utah.

In Canada, the western edge of the Rockies is marked by a long valley called the Rocky Mountain Trench, running through British Columbia. The Continental Divide of the Americas runs through the Rocky Mountains, deciding whether rivers flow to the Atlantic or Pacific Oceans. One special peak, Triple Divide Peak in Glacier National Park, sends water to three different places: the Atlantic, Pacific, and even Hudson Bay.

Not many people live in the Rocky Mountains. The number of people in the Rocky Mountain states grew quickly between 1950 and 1990. Some mountain towns grew much larger during this time. For example, Jackson, Wyoming, grew a lot from 1972 to 2012.

The Front Range of the Rocky Mountains near Denver, Colorado

Geology

See also: Geology of the Rocky Mountains

The rocks in the Rocky Mountains formed long before the mountains rose up due to movements in the Earth's crust. The oldest rocks are from a time called the Precambrian and are found in the heart of North America. During a time called the Paleozoic, much of western North America was covered by a shallow sea, which left behind layers of limestone and dolomite.

The mountains we see today began to form about 80 million years ago during an event called the Laramide orogeny. This happened when parts of the Earth's plates pushed together, causing the land to fold and rise. Over time, erosion has worn down the mountains, exposing older rocks and creating the landscapes we see today.

Glaciers also shaped the Rockies during ice ages, leaving behind special landforms like U-shaped valleys. These geological processes have revealed a wide variety of rocks at the surface, telling the story of the Earth's long history.

Ecology and climate

Main article: Ecology of the Rocky Mountains

The Rocky Mountains have many plants and animals because they are very big and have different weather. The mountains go from northern Canada to New Mexico, with heights from low grasslands to very tall peaks. The weather changes a lot, with some places getting little rain and others much more.

Scientists divide the Rockies into zones based on what plants can grow there. Some zones have grasses, and others have forests with different kinds of trees, depending on how warm or cold it is. The mountains are home to animals like wolves, elk, deer, mountain goats, and bears. Some animals have had trouble because people moved into their homes, but people are working to help them.

History

Indigenous people

Since the last great ice age, the Rocky Mountains were home to many groups of indigenous people, including the Apache, Arapaho, Bannock, Blackfoot, Cheyenne, Coeur d'Alene, Kalispel, Crow Nation, Flathead, Shoshone, Sioux, Ute, Kutenai, Sekani, and Dunne-za. These people hunted large animals like mammoths and ancient bison in the foothills and valleys. They moved between the plains and the mountains with the seasons, following animals and gathering food.

European exploration

The history of Europeans in the Rocky Mountains changed quickly. In 1540, Spanish explorer Francisco Vázquez de Coronado entered the region. In 1610, the Spanish founded the city of Santa Fe at the foot of the Rockies in New Mexico. The arrival of horses, metal tools, and new diseases changed the lives of the indigenous people.

In 1739, French fur traders Pierre and Paul Mallet were the first Europeans to report on the Rocky Mountains. In 1793, Sir Alexander Mackenzie became the first European to cross the Rocky Mountains, reaching the Pacific coast in Canada. The Lewis and Clark Expedition from 1804 to 1806 was the first scientific exploration of the Rockies. Mountain men from France, Spain, and Britain explored the mountains looking for furs and minerals.

Settlement

After 1802, fur traders and explorers brought more Americans into the Rockies. In 1832, Benjamin Bonneville led the first wagon train across the Rockies using South Pass in Wyoming. Thousands traveled through the Rockies on the Oregon Trail starting in the 1840s. Gold discoveries in Colorado, Idaho, Montana, and British Columbia in the 1850s and 1860s brought many people to the mountains. The transcontinental railroad was completed in the United States in 1869, and in Canada in 1885. National parks like Yellowstone in the U.S. and Jasper, Banff, Yoho, and Waterton Lakes in Canada were created, helping to start tourism in the region. Economic development focused on mining, forestry, agriculture, and recreation.

Economy

The Rocky Mountains have many important resources. The mountains have minerals such as copper, gold, lead, molybdenum, silver, tungsten, and zinc. Mines like the Climax mine near Leadville, Colorado, once made a lot of molybdenum, used to make strong steel for cars and airplanes. Other mines, like the Coeur d'Alene mine in Idaho, produce silver, lead, and zinc. Canada has large coal mines, especially near Fernie and Sparwood in British Columbia.

The Rocky Mountains also have coal, natural gas, oil shale, and petroleum. Two big areas for natural gas from coal are the San Juan Basin in New Mexico and Colorado, and the Powder River Basin in Wyoming. These areas have lots of gas.

Farming and raising animals are also important. Farmers grow crops and move animals between high mountain pastures in summer and lower valleys in winter.

Many visitors come to the Rocky Mountains each year to enjoy the beautiful scenery. Popular places include Yellowstone National Park, Glacier National Park, and Rocky Mountain National Park in the United States, and Banff National Park and Jasper National Park in Canada. In winter, many people visit to ski and snowboard at resorts throughout the mountains.

Hazards

Main articles: Hazards of outdoor recreation and Mountaineering § Hazards

When exploring the Rocky Mountains, it’s important to be aware of some potential dangers. You might come across bears or mountain lions, which can be scary. Other things to watch out for include bugs, wildfires, bad snow conditions, and getting too cold at night [].

The Rocky Mountains can be very challenging, and people have faced serious situations over the years. These include falls from steep cliffs and falling rocks. The U.S. Forest Service does not keep updated records on all such incidents.