The Alaska Volcano Observatory has released a close-up photo of the building lava dome in Mt. Redoubt. There is on-going concern that the building dome may yet result in an explosive eruption. The more the dome builds, the more violent a subsequent eruption might be. Conversely, it could serve to seal the vent if there is insufficient pressure behind it.

This picture is a crop of the dome itself from the larger shot, and has been corrected for temperature at 6500K and contrast enhanced for definition. You can see what appears to be incandescent rock in the rubble pile, indicating that this is recent, still very hot rock.

Extract from the close-in view of the front of the active lava dome growing in the summit crater of Redoubt Volcano since April 4.  Picture Date: April 16, 2009 12:51:04 Image Creator: McGimsey, Game  Image courtesy of AVO/USGS.

Extract from the close-in view of the front of the active lava dome growing in the summit crater of Redoubt Volcano since April 4. Picture Date: April 16, 2009 12:51:04 Image Creator: McGimsey, Game Image courtesy of AVO/USGS.

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