One of the largest shield volcanoes in North America, Newberry Crater is all that remains of a mountain that once towered above the central Oregon basin. In the not so distant geological past this mountain was over 10,000 feet in height but centuries of violent eruptions and the eventual collapse of the entire summit have left only a huge crater in its place. The 21 mile long rim of this crater varies in height but Paulina Peak is clearly the high point at nearly 8,000 feet. This peak offers views of all the Cascade mountains from Adams to Shasta and of the Oregon desert to the Southeast. Paulina Lake sits within the Newberry Crater, formed from over 500,000 years of volcanic activity. It is located 6,331 feet (1,930 m) above sea level in the Newberry National Volcanic Monument near La Pine. The lake's primary inflow is seepage from East Lake, snow melt, and hot springs, and its outflow is Paulina Creek, a tributary of the Little Deschutes River. It has an area of 1,531 acres (619.6 ha), a volume of 249,850 acre feet (308,185 dam), a maximum depth of 250 feet (76.2 m), a shore length of about 6.7 miles (11 km).