Yellowstone National Park is a U.S. National Park located in the states of Wyoming, Montana, and Idaho. Yellowstone is the first and oldest national park in the world and covers 3,470 square miles (8,980 km²), mostly in the northwest corner of Wyoming. The park is famous for its various geysers, hot springs, and other geothermal features. A series of lightning-derived fires started to burn large portions of the park in July of the especially dry summer of 1988. Thousands of firefighters responded to the blaze in order to prevent human-built structures from succumbing to the flames. Controversially, however, no serious effort was made to completely extinguish the fires, and they burned until the arrival of autumn rains. Ecologists argue that fire is part of the Yellowstone ecosystem, and that not allowing the fires to run their course (as has been the practice in the past) will result in an overgrown forest that would be extremely vulnerable to deoxygenation, disease, and decay. In fact, relatively few megafauna in the park were killed by the fires; and since the blaze, many saplings have sprung up on their own, old vistas are viewable once again, and many previously unknown archaeological and geological sites of interest were found and cataloged by scientists. The National Park Service now has a policy of lighting smaller, controlled "prescribed fires" to prevent another dangerous buildup of flammable materials. This image is shot vertical.

Yellowstone National Park is a U.S. National Park located in the states of Wyoming, Montana, and Idaho. Yellowstone is the first and oldest national park in the world and covers 3,470 square miles (8,980 km²), mostly in the northwest corner of Wyoming. The park is famous for its various geysers, hot springs, and other geothermal features. A series of lightning-derived fires started to burn large portions of the park in July of the especially dry summer of 1988. Thousands of firefighters responded to the blaze in order to prevent human-built structures from succumbing to the flames. Controversially, however, no serious effort was made to completely extinguish the fires, and they burned until the arrival of autumn rains. Ecologists argue that fire is part of the Yellowstone ecosystem, and that not allowing the fires to run their course (as has been the practice in the past) will result in an overgrown forest that would be extremely vulnerable to deoxygenation, disease, and decay. In fact, relatively few megafauna in the park were killed by the fires; and since the blaze, many saplings have sprung up on their own, old vistas are viewable once again, and many previously unknown archaeological and geological sites of interest were found and cataloged by scientists. The National Park Service now has a policy of lighting smaller, controlled "prescribed fires" to prevent another dangerous buildup of flammable materials. This image is shot vertical.