US-Parks.com: America's National Parks and Road Trip Planning Find Your Park Road Trip Activities Nature

Yellowstone National Park Fumaroles

Yellowstone National Park

Fumaroles, or steam vents, are hot springs with a lot of heat, but so little water that it all boils away before reaching the surface. At places like Roaring Mountain, the result is a loud hissing vent of steam and gases.

By Area

By Feature

Featured Outdoor Gear

$127.46 25% off
Lola Jacket - Girls'...
Price subject to change | Available through Backcountry.com

National Park Spotlight
Bryce Canyon National Park
Bryce Canyon National Park
Featured Wildlife
Maine Puffins
Maine Puffins


Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.

Currently Viewing
Yellowstone National Park Fumaroles
Outdoor Gear
Featured National Parks
Popular Activities