Newberry

Paulina Lake, in the caldera of Newberry Volcano. View looking south-southeast.

Map showing one-year probability of accumulation of 1 centimeter (0.4 inch) or more of tephra from eruptions of volcanoes in the Cascade Range.

The popping and cracking of ice in lakes within the Newberry Volcano caldera is picked up by local seismic stations, such as Central Pumice Cone. The lake-ice quakes do not resemble standard volcanic low-frequency or high-frequency events and are sporadically observed in the winter at other ice-covered lakes in Yellowstone, Long Valley, and elsewhere.

Global Positioning System receiver (called a GPS monument) at North Rim Station, a monitoring location at Newberry volcano, Oregon.

View looking south across Newberry caldera towards the Big Obsidian flow (left of center) and Paulina Peak, with Paulina Lake in foreground. Photo taken from the north rim of the caldera.

A view looking northeast across the central caldera of Newberry Volcano.  Paulina Lake is in the foreground and East Lake is in the distance.  The Central Pumice Cone lies between the two lakes. Near the bottom of the photo at the south edge of Paulina Lake, the two hills are named the Lakeshore Domes. The volcano is covered in snow and the lakes have ice on their surface

Eruptions in the Cascade Range during the past 4000 years. USGS GIP 64

Newberry Volcano, Oregon simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Newberry Volcano's Youngest Lava Flows

Extending approximately 75 miles north to south and 27 miles east to west, Newberry Volcano and its broad apron of lavas (light yellow shaded area) cover a total area of almost 1,200 square miles, making it the largest volcano of the Cascades volcanic chain. Its lavas stretch north beyond Smith Rock State Park, and south almost to Fort Rock State Natural Area. The town of

Erratics located on a cinder cone on the northeast flank of Newberry Volcano, Oregon.