Alan Cressler:
Ape Cave, Meat Ball, Mount Saint Helens National Volcanic Monument, Skamania County, Washington, Manuel Beers 1
Alan Cressler:
Ape Cave, upper entrance, Mount St. Helens National Volcanic Monument, Skamania County, Washington, Brian Killingbeck 3
Alan Cressler:
Ape Cave, upper entrance, Mount St. Helens National Volcanic Monument, Skamania County, Washington, Brian Killingbeck 4
Alan Cressler:
Ape Cave, upper entrance, Mount St. Helens National Volcanic Monument, Skamania County, Washington, Brian Killingbeck 5
Alan Cressler:
Calcite Formations, Textbook Tunnel, Big Room, Kau District, Hawaii County, Hawaii 2
Alan Cressler:
Calcite Formations, Textbook Tunnel, Big Room, Kau District, Hawaii County, Hawaii 4
Alan Cressler:
Calcite Formations, Textbook Tunnel, Big Room, Kau District, Hawaii County, Hawaii 6
Alan Cressler:
Calcite Formations, Textbook Tunnel, Big Room, Kau District, Hawaii County, Hawaii 7
Alan Cressler:
Calcite Formations, Textbook Tunnel, Big Room, Kau District, Hawaii County, Hawaii 8
Alan Cressler:
cave in Puuwaawaa ahupuaa, Hawaii County, Hawaii, Tabby Cavendish and Phyllis Boneau 1
Alan Cressler:
cave in Puuwaawaa ahupuaa, Hawaii County, Hawaii, Tabby Cavendish, Chasity Stinson, Phyllis Boneau 1
Alan Cressler:
Cave in Puuwaawaa Ahupuaa, North Kona District, Hawaii County, Hawaii, Paul Aughey 1
Alan Cressler:
Copper Silicate Gel, Formation, Kipuka Kanohina Cave System, Hawaii County, Hawaii 1
Alan Cressler:
extinct Hawaiian goose bones, Manu Nui Cave System, Hawaii County, Hawaii 1
Alan Cressler:
Forest Cave, Big Room, Hawaii County, Hawaii 1
Alan Cressler:
Forest Cave, Hawaii County, Hawaii 1
Alan Cressler:
Geograpsus severnsi, Extinct Land Crab, Forest Cave, Hawaii County, Hawaii 1
Alan Cressler:
Geograpsus severnsi, Extinct Land Crab, Forest Cave, Hawaii County, Hawaii 2
Alan Cressler:
Great Crack Two Cave, Entrance Pit, 1823 Lava Flow, Great Crack, Southwest Rift Zone, Hawaii Volcanoes National Park, Hawaii County, Hawaii, Andy Porter 1
Alan Cressler:
Great Crack Two Cave, Second Pit, 1823 Lava Flow, Great Crack, Southwest Rift Zone, Hawaii Volcanoes National Park, Hawaii County, Hawaii, Jeff Moore 1
Alan Cressler:
Great Crack Two Cave, Great Crack, Southwest Rift Zone, Hawaii Volcanoes National Park, Hawaii County, Hawaii 1
Alan Cressler:
Great Crack Two Cave, Second Pit, 1823 Lava Flow, Great Crack, Southwest Rift Zone, Hawaii Volcanoes National Park, Hawaii County, Hawaii, Andy Porter and Brian Killingbeck 1
Alan Cressler:
great owl caverns craters of the moon national monument butte co id nancy aulenbach brent aulenbach 1
Alan Cressler:
Ship Ladder Cave, Kiholo Bay, Hawaii County, Hawaii, Andy Porter 1
Alan Cressler:
Ship Ladder Cave, Kiholo Bay, Hawaii County, Hawaii, Andy Porter and Jack Vose 2
Alan Cressler:
Kipuka Kanohina Cave System, and Chrysothrix chlorina (possible identification), Hawaii County, Hawaii, Manuel Beers 1
Alan Cressler:
Kipuka Kanohina Cave System, Hawaii County, Hawaii, Ann Bosted 2
Alan Cressler:
Kipuka Kanohina Cave System, Hawaii County, Hawaii, Brian Killingbeck 1
Alan Cressler:
Kipuka Kanohina Cave System, near Ashley Chan Falls, Hawaii County, Hawaii, L to R, Jeff Coble, Ann Bosted, Manuel Beers, Brian Killingbeck 1
Alan Cressler:
Kipuka Kanohina Cave System, near Ashley Chan Falls, Hawaii County, Hawaii, L to R, Jeff Coble, Manuel Beers, Ann Bosted, Brian Killingbeck 1
