Table Mountain

Table Mountain is a peak rising on the north side of the Columbia River in Washington state, about 4 miles north-northwest of Bonneville Dam. It is one of the most spectacular landmarks of the Columbia River Gorge. Its southeast face drops 2,400 feet in less than one horizontal mile, and is topped by an almost vertical 800-foot cliff. Table Mountain is joined by the similar Greenleaf Peak to the northeast, and also by Hamilton Mountain to the southwest, which is lower,, but similarly steep and much closer to the Columbia. Together these peaks form an impressive group on the Washington side of the Gorge.

Between 1425 and 1450 AD the south side of Table Mountain sheared off and dammed the Columbia River in an event known as the Bonneville Slide.

Source: Wikipedia