Images

Mount St. Helens' dome and glacier uplift from the east, after steam and ash eruption.

Plume/crater image of Mount St. Helens October 1, 2004 at 12:03:55 PDT.

Mount St. Helens' dome and glacier uplift from the east, after steam and ash eruption.

USGS CVO scientist answers media inquiries relating to the increase in Mount St. Helens activity, October 2004.

South side of Mount St. Helens lava dome, as seen from the east, showing the dome and part of the glacier forming at the base of the dome. September 30, 2005

Western side of Mount St. Helens crater, and dome, showing the glacier forming at the base of the dome.

Close-in view of south side of Mount St. Helens lava dome, as seen from the southeast, showing the dome and part of the glacier forming at the base of the dome. September 2005

Upper slopes of Glacier Peak, Washington.

Oblique aerial photograph of north flank, crater, lava dome and new glacier (behind dome), Mount St. Helens, Washington state, USA. Mount Hood, Oregon, is faintly visible in the background.

Mount St. Helens crater and dome as seen from SugarBowl, on the NE flank of the volcano. September 2005

Berm from a 1997 lahar is visible along the channel. Mount St. Helens' east crater wall is visible in the background.

South side of Mount St. Helens lava dome, as seen from the east, showing the dome and part of the glacier forming at the base of the dome. August 29, 2005

Mount Rainier as seen from Paradise Ridge, Washington.

Hydrothermally altered rock of Sherman Crater's western crater wall, Mount Baker, Washington.

Glacier Peak, Washington, in the prime of summer when much of the snow has melted from its flanks.

Sherman Crater (foreground) below the summit of Mount Baker, Washington.

Pahoehoe lava flows are fed by overflows from the fissure 8 lava channel. Geologist ground crews photographed this flow along Nohea Street in Leilani Estates subdivision.

Slow cooling of a basaltic lava flow that was erupted about 500,000 years ago resulted in the formation of hexagonal columns at Sheepeater Cliff, in Yellowstone National Park.

Northeast crater wall above Sugar Bowl, Mount St. Helens with annotated deposits from some of the Spirit Lake Stage eruptive periods. Photograph from late summer 2003.

Norris-2003. Location map of seismometers and GPS receivers deployed to help monitor the Norris Geyser Basin.

A 1.5-million-year-old basaltic lava flow in the canyon wall of the Yellowstone River as viewed from Calcite Springs Overlook near Tower Junction in Yellowstone National Park.  Slow cooling of this lava flow resulted in the formation of vertical columns.  Glacial gravels are present above and below the lava flow.