Hat Rock State Park | |
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Type | Public, state |
Location | Umatilla County, Oregon |
Nearest city | Hermiston |
Coordinates | 45°54′53″N 119°09′54″W / 45.9148548°N 119.1650109°W [1] |
Operated by | Oregon Parks and Recreation Department |
Hat Rock State Park is a state park in the U.S. state of Oregon, administered by the Oregon Parks and Recreation Department. The park is located off the east side of U.S. Highway 730 in Hermiston, [2] on the south shore of Lake Wallula behind McNary Dam on the Columbia River. [3]
Hat Rock is a geological formation that, along with another outcropping rock in the park called Boat Rock, are thought to be exposed remnants of a 12-million-year-old basalt flow. Floods from the Ice Age eventually left these bedrocks, as well as others along the Columbia River Gorge exposed at the surface of the Earth. [4] It is 70 feet (21 meters) high.