Newberry is a broad shield-shaped volcano in central Oregon that rises a mile above sea level. It has been constructed by thousands of eruptions, including at least 25 in the last 12,000 years. Newberry covers the most area and has the highest volume of any volcano in the Cascade Volcanic Arc.
The Three Sisters volcanoes, all rising above 3000 meters, form the most prominent landmarks of the central Oregon Cascades. All three volcanoes ceased erupting during the Pleistocene, but flank vents of South Sister on the left and North Sister on the right have erupted in the past few thousand years.