It has as an elongated shield-form that extends 60 km north-south and 30 km east-west. The Deschutes River, to the west of Newberry, was sometimes shifted further westward as lava flows originating at Newberry diverted the river. km, Newberry is one of the largest Quaternary volcanoes in the contiguous United States. Newberry volcano is about 20 miles (30 km) southeast of Bend and is one of the largest volcanoes in the Cascades. It can be explored on a self-guided tour and is open seasonally. It is located in the caldera of Mount Mazama. Newberry National Volcanic Monument was designated on November 5, 1990, to protect the area around the Newberry Volcano in the U.S. state of Oregon.

Unlike familiar cone-shaped Cascades volcanoes, Newberry was built into the shape of a broad shield by repeated eruptions over the past 400,000 years.

The most seismically active areas in the country, the Newberry Volcano is located at the southern end of the Newberry National Volcanic Monument. Newberry Volcano is the largest volcano in the Cascades volcanic arc and covers an area the size of Rhode Island (about 3100 km 2 or 1200 mi 2 ). The highest point of the volcano, Paulina Peak, is 7,984 feet (2,434 m). Newberry Volcano is the largest volcano in the Cascades volcanic arc and covers an area the size of Rhode Island (about 3100 km 2 or 1200 mi 2). Newberry Volcano in central Oregon is dry over much of its vast area, except for the lakes in the caldera and the single creek that drains them. Paulina and East lakes are inside the caldera. The caldera was formed when a magma chamber collapsed. Newberry Caldera is the largest developed area within the national monument. It covers an area in excess of 500 mi 2, and lavas from it extend northward many tens of miles beyond the volcano. Newberry Caldera has many natural tourism opportunities. Then in 2011, USGS scientists installed 8 new real-time seismic and deformation stations. It is the largest volcano in the Cascade Volcanic Arc, and has roughly the same area as the state of Rhode Island at 1,200 square miles (3,100 km ) if its lava flows are included. Newberry Volcano is located near Bend, Oregon (Figure 2). Newberry Caldera is roughly 37 miles (60 km) from Bend and 19 miles (31 km) from La Pine. Newberry Caldera itself is five miles in diameter and contains two alpine Lakes, hot springs, extensive obsidian fields and lava formations. Newberry lies 37 miles (60 km) east of the major crest of the Cascade Rangein the High Lava Plains region, rising 3,500 feet (1,10… Newberry volcano, situated east of the Cascade Range, is one of the largest volcanoes in the conterminous United States, covering an area of about 1,600 km2. Newberry National Volcanic Monument - uncrowded fascinating place. The NEWGEN field research location on the western flank of Newberry Volcano was strategically chosen by the project team for a number of reasons including: More than 30 years of exploration and study provide extensive background data for the area. Located near the butte, this 1-mile-long cave was formed by molten lava that left an underground lava tube — the longest in Oregon. Commencing about 400,000 years ago, Newberry Volcano erupted primarily basalt and grew into a broad shield shape. Over time the caldera filled up with water that created two lakes, Paulina Lake and East Lake. The Newberry Volcano was thought to have the fewest number of earthquakes of all monitored volcanoes in the Cascade Range. It is the deepest lake in the United States with a depth of 594 m (1,949 ft). The center of Newberry Volcano lies 20 miles (32 km) to the south of the city of Bend, at the intersection of Deschutes, Klamath and Lake counties in Oregon, where it is one of the most accessible volcanoes in the state. A specific example of where new volcano monitoring has led to new discoveries is at Newberry Volcano in central Oregon. The summit is marked by a caldera that is 7 by 5 km across (Figures 2 and 3). The summit caldera is 3 by 4 m iles (5 by 7 km). The low-angle basaltic to basaltic-andesite shield volcano is dotted with more than 400 cinder cones; however it has also produced major silicic eruptions associated with formation of a 6 x 8 km summit caldera containing two lakes.