Which U.S. National Park contains more than half of the world's geysers?

Which U.S. National Park contains more than half of the world's geysers?

• A. Grand Canyon National Park
• B. Yosemite National Park
• C. Zion National Park
• D. Yellowstone National Park

Answer: (D)

Geysers require a persistent underground heat source and a network that can vent steam and hot water. Yellowstone National Park sits atop a large volcanic hotspot, fueling hundreds of geysers, hot springs, and other geothermal features. Because of this extensive geothermal field, Yellowstone is widely said to contain more than half of the world’s geysers. The other parks—Grand Canyon, Yosemite, and Zion—are renowned for canyons and rock formations rather than geysers, so they don’t match Yellowstone’s concentration of geothermal activity.

Geysers require a persistent underground heat source and a network that can vent steam and hot water. Yellowstone National Park sits atop a large volcanic hotspot, fueling hundreds of geysers, hot springs, and other geothermal features. Because of this extensive geothermal field, Yellowstone is widely said to contain more than half of the world’s geysers. The other parks—Grand Canyon, Yosemite, and Zion—are renowned for canyons and rock formations rather than geysers, so they don’t match Yellowstone’s concentration of geothermal activity.