For more information, visit on the National Park Service's Grand Prismatic Spring page. Lower Loop Van Tour from West Yellowstone: Grand Prismatic and Old Faithful (295 reviews) ...

How the Grand Prismatic Spring Gets Its Kaleidoscopic Colors The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic Spring—the largest hot spring in the U.S.

Millions of people visit Yellowstone National Park’s hot springs. There’s Grand Prismatic, the park’s largest and brightest spring known for its deep orange, yellow and turquoise colors; Mammoth Hot ...

Located in Wyoming this national park sits atop a giant supervolcano, with a newly discovered volcanic vent emitting steam ...

Yellowstone National Park is a place where steam rises from the earth and geysers erupt like clockwork. Parameters were ...

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park ... colors of Grand Prismatic Spring come from ...

A Wildlife Photographer of the Year captures the paradox of the park. 9 min read Michael ... More than a third of Yellowstone, including Grand Prismatic Spring, sits within the caldera of a ...

Yellowstone National Park's nearly 3,500 square miles ... the Old Faithful area is home to Old Faithful and the Grand Prismatic Spring, two of Yellowstone's most famous attractions.