Images

This image from the European Space Agency's Sentinel-2A satellite offers a breathtaking view of Crater Lake National Park in southern Oregon. It offers something equally important to park managers, scientists, and anyone else interested in land cover change—a view that is highly similar and complementary to Landsat acquisitions.

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.

Photo of Crater Lake with oblique bathymetric image of the caldera floor beneath the lake's surface. Oregon

Mount Scott fire lookout tower near Crater Lake, Oregon. Tower houses seismic and deformation monitoring instruments.

Crater Lake partially fills the caldera that formed approximately 7,700 years ago during the eruption of a 12,000-ft-high volcano known as Mount Mazama.

Crater Lake caldera rim view to north. Pumice Castle, orange spire in center right, a near-vent deposit formed by 71ka Plinian tephra-fall deposit; cliff to left is Redcloud Cliff lava flow.

Andesite lava flow of Kerr Notch (near Sun Creek) developed columnar joints as it cooled after it was deposited, Crater Lake, Oregon.

Steel Information Center in Winter at Crater Lake National Park.

Pinnacles formed in Mazama pyroclastic flow deposit as erosion revealed fumarole chimneys that formed shortly after 7,700 ka eruption released gas, Crater Lake.

Crater Lake panorama seen from the lake's southern shore. Wizard Island is cone in western portion of lake. Oregon

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

View southwest of Garfield Peak and Eagle Crags above Chaski Bay. Cliffs at caldera rim are andesite of Applegate Peak (unit aa; ca. 210-270 ka), overlain by two thin flows of andesite of Garfield Peak at top center (unit ag; 224 ±9 ka). Talus rests on flat top of massive slide block that consists of altered lavas of units aa, ak(?), and db(?).

Morning aerial view looking northwest up the valley of Sun Creek. Applegate Peak caps the prominent rock wall of the west side of Sun Notch at the caldera rim. Northwest caldera wall is visible on opposite side of Crater Lake through Sun Notch. Grayback Ridge in foreground is thick lava of pre-Mazama rhyodacite (410-460 ka).

Crater Lake Caldera with Wizard Island cinder cone and lava flows, some of the youngest features in the caldera as seen from Merriam Point. Viewed toward the south. Oregon

Crater Lake is the remnant of Mount Mazama, which erupted catastrophically 7,700 years ago to form the caldera.Wizard Island in lake and Mount Scott is peak on right shore. View from south. Oregon

Crater Lake from the air viewed from the southwest. Wizard Island is the conical mound in the lake and Mount Scott is the peak beyond the lake. Oregon

Crater Lake bathymetric map showing the geology of the caldera floor with post-caldera eruptive units. Oregon

USGS scientist collecting samples at Crater Lake, Oregon.

Mount Thielsen (2,799 m or 9,182 ft) is an extinct volcano north of Crater Lake, Oregon that last erupted 250,000 years ago. Aerial view.

Pinnacles left by erosion of fumaroles that formed as layered pyroclastic flow deposit released gas and solidified into chimneys that eventually eroded, Crater Lake, Oregon.

These pyroclastic-flow deposits of the climactic eruption of Mount Mazama, during which Crater Lake caldera formed, are eroded into spectacular spires at The Pinnacles on Wheeler Creek.