Near Hermiston in Umatilla County, Oregon — The American West (Northwest)
How Do You Make a Hat?
Tropical Forest: 17 million years ago - before the eruptions The warmer climate supported forests of ginkgo, elm and cypress.
Eruptions: Long cracks, called fissures, opened in the earth's crust and spewed a spending pool of lava over the land, destroying everything in its path.
Cooling: The lava gradually cooled and cracking in vertical columns. Some rocks are more evenly colonnaded than others. Slow, even rates of cooling caused straight, wide columns, while rapid cooling resulted in a more jumbled look.
Repeated Layers: Over millions of years, flow built upon flow. Different flows are often distinctly colored. In some places the basalt
Erosion: Erosion stripped away topsoil and left cliffs exposed. Today, the rocks are beautifully exposed at Hat Rock. If you look of in the distance, you can see similar rocks. They are pieces of the same flow.
Erected by Oregon Parks and Recreation Department.
Topics. This historical marker is listed in this topic list: Natural Features.
Location. 45° 55.001′ N, 119° 10.238′ W. Marker is near Hermiston, Oregon, in Umatilla County. Marker can be reached from Marina Drive near Hat Rock State Park Road. The marker is a short hike from the Marina Drive parking lot in Hat Rock State Park. Touch for map. Marker is in this post office area: Hermiston OR 97838, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within 9 miles of this marker, measured as the crow flies. Naamí Tiičám Ku Waqíšwit (approx. ¼ mile away); A Team of Discovery (approx. ¼ mile away); It's All Downhill From Here (approx. ¼ mile away); The Umatilla Rapids (approx. 6½ miles away); The Lewis and Clark Expedition (approx. 6½ miles away); Cayuse, Umatilla and Walla Walla Homeland (approx. 6½ miles away); Patímaša Tiičámna (approx. 6½ miles away); Strangers "from the clouds" (approx. 8.8 miles away in Washington). Touch for a list and map of all markers in Hermiston.
Credits. This page was last revised on October 26, 2020. It was originally submitted on October 26, 2020, by Barry Swackhamer of Brentwood, California. This page has been viewed 17 times since then. Photos: 1, 2, 3. submitted on October 26, 2020, by Barry Swackhamer of Brentwood, California.