Earthquake Point

Along State Highway 97 Alternate two miles north of Entiat is a sign along the side of the highway. The sign reads,

This site on Ribbon Cliff, called Broken Mountain by the Indians, experienced a violent earthquake in December, 1872. The shock split the mountain, forming the cliff to the west and causing a huge rockslide which stopped the flow of the Columbia River for several hours. The black ribbons of the cliff are lava-filled fissures. Plateau of the region later covered the rock mass. The white volcanic ash in road excavation is so recent as to have buried undecayed logs. It was blown from Glacier Peak, a volcanic cone, 50 miles to the northwest.

Located along the west side of State Highway 97 Alternate between mile marker 218 and 219 between Entiat and Chelan.