Caldera chronicles: The roads less traveled in the Greater Yellowstone Ecosystem
CALDERA CHRONICLES

Caldera chronicles: The roads less traveled in the Greater Yellowstone Ecosystem

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Thorofare

A pack string crosses the Yellowstone River in the Thorofare region. The area is the most remote place in the lower 48 states.

If you’ve visited Yellowstone, perhaps you’ve been fortunate to hear wolves howling in the Lamar Valley or to watch steam rising in a geyser basin on a winter morning. The wildness of this landscape often evokes a time long ago.

Yellowstone National Park is at the core of a much larger natural area called the Greater Yellowstone Ecosystem (GYE). The roughly 20-million-acre GYE is one of the largest nearly intact temperate ecosystems on Earth, with enough wild space for grizzlies, wolverines and lynx to roam. This rare setting makes Yellowstone one of the premier places in the world for scientists to study natural processes like predator-prey dynamics, grazing ecology, wildland fire, free-flowing rivers and thousands of hydrothermal features.

GYE roads

This map shows roads in the Greater Yellowstone Ecosystem. 

A striking image to highlight this unique landscape is a map of the roads in the GYE. A dense network of roads spreads inward from all edges of the map. But much of the core of the GYE remains roadless. These roadless areas are under many forms of land ownership: private, tribal, state and federal. Thus, they are under varying degrees of restriction from future road building and development. Some of the GYE’s federal lands are designated as wilderness under the Wilderness Act of 1964. This law is intended to preserve areas “where the earth and its community of life are untrammeled by man, where man himself is a visitor who does not remain.”

While none of Yellowstone National Park is currently designated wilderness, in 1972, 90 percent of the park was recommended to Congress for designation and continues to be managed to preserve its wild character.

The park therefore provides an incredible opportunity for visitors to choose their own experience. Some areas, like Old Faithful, have roads, parking lots, hotels, gas stations, stores and lots of people. In contrast, the recommended wilderness areas of the park are often quite remote, requiring many miles of hiking or horseback riding, and allowing a true sense of solitude.

The Thorofare region in the southeast corner of the park is the most remote place in the lower 48 states — it is the farthest you can get from a road (about 20 miles in any direction). That’s not to say that there are no human impacts at all in the Thorofare. The region contains a network of trails, backcountry patrol cabins and even some scientific equipment. That’s right, scientific research is often considered to be an appropriate human use of wilderness if it conforms to the concept of “minimum requirement.”

The University of Utah is one of the institutions with equipment in the Thorofare. Their seismometer on the summit of Hawks Rest (in the Teton Wilderness just southeast of the park) is the most remote station they manage. As you can imagine, it takes a big effort and a few days of horseback riding to service this seismometer.

The GYE offers our modern society remarkable challenges and benefits. As roads and urban development continue to expand around the world, are there some areas that we hope to preserve for their wild character? What values do these roadless areas offer for science, for recreation, for wildlife? As public land owners, we all shape the future of the GYE and other wild landscapes.

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory.

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