Geographer David:
ash, Mount St Helens.
Geographer David:
ash, Mount St Helens
Geographer David:
Mount St Helens, 11 May 1980
Geographer David:
Mount St Helens, June 1970
Geographer David:
April 1977, Mount St Helens
Geographer David:
Mount St Helens, April 1977
Geographer David:
Timberline Parking Lot, Mount St Helens
Geographer David:
Mount St Helens
Geographer David:
Mount st Helens
Geographer David:
Mount St Helens 12 April 1980
Geographer David:
Mount St Helens, 26 April 1980
Geographer David:
Mount St Helens, 17 May 1980
Geographer David:
mp 30, Hwy 503, Mount st Helens
Geographer David:
Smith Creek lahar, Mt St Helens
Geographer David:
Mt Adams from Ape Canyon
Geographer David:
Upper Smith Creek drainage, Mt St Helens panorama
Geographer David:
the Lahar on the south-east side of the mountain
Geographer David:
Smith Creek
Geographer David:
Smith Creek
Geographer David:
Spirit Lake, Mt St Helens panorama
Geographer David:
Sheep Canyon trail, Mt St Helens
Geographer David:
upper Sheep Canyon, Mt St Helens, WA
Geographer David:
Mount St Helens from upper Ape Canyon trail
Geographer David:
MSH abv Ape Canyn 113008
Geographer David:
Sheep Canyon, Mt St Helens
Geographer David:
Muddy River Lahar lower
Geographer David:
Muddy River
Geographer David:
Mount St Helens
Geographer David:
Mount St Helens
Geographer David:
Muddy River Lahar - upper, 2008
