Cone D

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Reported Activity

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Past Activity Legend:

	Eruption
	Questionable eruption
	Non-eruptive activity

A look down into the caldera from above the east rim of Okmok. The photo shows a tan-colored lake and white steam plumes and gray ash plumes eminating from vents near the base of cone D.<br />

Two photographs of the falls on Crater Creek, the outflow stream from Okmok caldera. The right photo was taken on August 2nd, three weeks after the onset of the 2008 eruption. The left photo is approximately the same view taken in September, 2004. Okmok is treeless, and at lower elevations is covered with a verdant blanket of wildflowers and grasses. Okmok is also active, and several eruptions within the past 100 years have produced intra-caldera ash and lava flows several kilometers long. However, the location, thickness and extent of this ash-fall blanket are unprecedented within the past 100 years. The index image is from a DEM. Both photographs and the DEM are by Janet Schaefer, AVO/DGGS.

Cone D in the caldera at Okmok Volcano. View is to the north.

Geologists Jim Beget (UAF) and Tina Neal (USGS) investigate surge deposits within the caldera at Okmok volcano. Cone D can be seen in the background.

This is a photo of the caldera rim behind Cone C and D on Okmok. Photo courtesy of Tina Neal, USGS.

Cone D, viewed from inside a verdant Okmok caldera, several years prior to the 2008 eruption of Cone D.

Cone D, from inside the caldera. Photo taken several years prior to the 2008 eruption.

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