The 1700 Cascadia earthquake resulted from a rupture at the Cascadia subduction zone along the coast of the Pacific Northwest . The earthquake caused a tsunami that was destructive in Japan ; it may also be linked to the Bonneville Slide , in which a large part of Washington 's Table Mountain collapsed into the Columbia River Gorge , damming the river and forming the Bridge of the Gods , a land bridge remembered in the oral history of local Native Americans
1700 Cascadia earthquake
1700 Cascadia earthquake
History of Oregon