Castle Geyser erupts, reaching 60 to 90 feet in height and lasting 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13417
Castle Geyser erupts with the colorful bacteria mats of Tortoise Shell Spring in the foreground. Castle Geyser reaches 60 to 90 feet in height and lasts 20 minutes. While Castle Geyser has a 12 foot sinter cone that took 5,000 to 15,000 years to form, it is in fact situated atop geyserite terraces that themselves may have taken 200,000 years to form, making it likely the oldest active geyser in the park. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13426
Grand Geyser erupts (right) with a simultaneous eruption from Vent Geyser (left). Grand Geyser is a fountain-type geyser reaching 200 feet in height and lasting up to 12 minutes. Grand Geyser is considered the tallest predictable geyser in the world, erupting about every 12 hours. It is often accompanied by burst or eruptions from Vent Geyser and Turban Geyser just to its left. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13457
White Dome Geyser rises to a height of 30 feet or more, and typically erupts with an interval of 15 to 30 minutes. It is located along Firehole Lake Drive.
Location: Lower Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13540
Pink Cone Geyser erupts. Pink Cone Geyser reaches 30 feet in height, and has highly variable interval and duration. It is a cone-type geyser and its cone has a pinkish tint due to manganese oxide in it. Firehole Lake Drive, Lower Geyser Basin, Yellowstone Park.
Location: Lower Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13551
Grand Prismatic Spring displays a stunning rainbow of colors created by species of thermophilac (heat-loving) bacteria that thrive in narrow temperature ranges. The blue water in the center is too hot to support any bacterial life, while the outer orange rings are the coolest water. Grand Prismatic Spring is the largest spring in the United States and the third-largest in the world. Midway Geyser Basin.
Location: Midway Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13573
Grand Prismatic Spring displays brilliant colors along its edges, created by species of thermophilac (heat-loving) bacteria that thrive in narrow temperature ranges. The outer orange and red regions are the coolest water in the spring, where the overflow runs off. Midway Geyser Basin.
Location: Midway Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13587
Grand Prismatic Spring displays brilliant colors along its edges, created by species of thermophilac (heat-loving) bacteria that thrive in narrow temperature ranges. The outer orange and red regions are the coolest water in the spring, where the overflow runs off. Midway Geyser Basin.
Location: Midway Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13591
Lamar Valley, summer. The Lamar Valleys rolling hills are home to many large mammals and are often called Americas Serengeti.
Location: Lamar Valley, Yellowstone National Park, Wyoming
Image ID: 13647
Upper Yosemite Falls near peak flow in spring. Yosemite Falls, at 2425 feet tall (730m) is the tallest waterfall in North America and fifth tallest in the world. Yosemite Valley.
Location: Yosemite Falls, Yosemite National Park, California
Image ID: 16068
Fern Springs, a small natural spring in Yosemite Valley near the Pohono Bridge, trickles quietly over rocks as it flows into the Merced River. Yosemite Valley.
Location: Fern Springs, Yosemite National Park, California
Image ID: 16084
Nevada Falls, with Liberty Cap (center) and Half Dome (left). Nevada Falls marks where the Merced River plummets almost 600 feet through a joint in the Little Yosemite Valley, shooting out from a sheer granite cliff and then down to a boulder pile far below.
Location: Nevada Falls, Yosemite National Park, California
Image ID: 16115
Yosemite Falls rises above Cooks Meadow. The 2425 falls, the tallest in North America, is at peak flow during a warm-weather springtime melt of Sierra snowpack. Yosemite Valley.
Location: Yosemite Falls, Yosemite National Park, California
Image ID: 16141
Bridalveil Falls with a rainbow forming in its spray, dropping 620 into Yosemite Valley, displaying peak water flow in spring months from deep snowpack and warm weather melt. Yosemite Valley.
Location: Bridalveil Falls, Yosemite National Park, California
Image ID: 16175