Yellowstone National Park in Park County, Wyoming — The American West (Mountains)
Shaped like a porkchop, this quiet spring was named “Dr. Morey’s Porkchop” in 1961. But this calm spring held many surprise, beginning with an eruption in 1971.
For the next 14 years, Porkchop occasionally erupted through its tiny vent, earning the name “Porkchop Geyser.”
In 1985, Porkchop Geyser erupted and did not stop until exploding several years later!”
Imagine a geyser exploding and hurling rocks toward you. That happened to eight park visitors on September 5, 1989. Porkchop’s narrow vent became constricted, throttling its flow of water and steam. Heat and pressure intensified until Porkchop blew up, throwing rocks more than 200 feet.
Fortunately, the astonished visitors were not hurt. The upended rocks you see today are a result of the small hydrothermal explosion they witnessed. Porkchop’s eruptions are now rare – sometimes years apart. Nobody knows what other surprises Porkchop has in store – only time will tell.
Erected by National Park Service.
Location. 44° 43.342′ N, 110° 42.49′ W. Marker is in Yellowstone National Park, Wyoming, in Park County. Marker can be reached from Grand Loop Road (U.S. 89), on Click for map. Marker is located in the Back Basin at Norris Geyser Basin in Yellowstone National Park. Marker is in this post office area: Yellowstone National Park WY 82190, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. A different marker also named Porkchop Geyser (within shouting distance of this marker); Cistern Spring (approx. 0.2 miles away); Minute Geyser (approx. 0.2 miles away); Steamboat Geyser (approx. Ľ mile away); Echinus (approx. 0.3 miles away); Echinus (approx. 0.3 miles away); Emerald Spring (approx. 0.3 miles away); Yellowstone National Park (approx. 0.4 miles away). Click for a list of all markers in Yellowstone National Park.
More about this marker. The background of the marker features a photograph of an erupting Porkchop Geyser.
Categories. • Natural Features •
Credits. This page originally submitted on , by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 164 times since then and 9 times this year. Photos: 1, 2, 3, 4, 5. submitted on , by Bill Coughlin of North Arlington, New Jersey. This page was last revised on June 16, 2016.