Elenco (na ordem dos créditos)
Rob Nelson
Self - Host
Stefan Burns
Self - Geophysicist
Tim Bechtel
Adam Cho
Roboticist
Jared Peacock
Self - Geophysicist, USGS
Valerie Van Heest
Self - Historian
George 'Paki' Stephenson
Self - Geologist
Tracy Beach
Self - Colorado Historian
Brent Breithaupt
Self - Paleontologist
Rufus Catchings
Kenneth Bader
Frank Watson
Self - Bill's Borther
Brian Price
Self - Conservationist
Luther Strayer
Self - Lead Scientist
John A. Martini
Self - Alcatraz Historian
Aubri Jenson
Self - Guide
Gretchen Schmauder
William Watson
Marsha Stevers
Self - Lodge Employee
Ron Smith
Bradley T. Lepper
Self - Archaeologist
John Vidale
Self - Seismologist
Deb Schweizer
Self - Park Ranger
Tres Smith
Self - LIDAR Operator
Jeff Volkman
Self - Manager: Rio Grande
Keith Muhlestein
Griffin Alberti
Self - Tech Advisor
Mark W. Holley
Self - Underwater Archaelogist
Mike Feves
Self - Geophysicist, Earth Dynamics
Dale Rucker
Heath Montgomery
Self - Media Relations Director: DIA
Martin Lockley
Larry Johnson
Self - Seelbach Historian
Brad Aagaard
Self - USGS
Tom Parsons
Jim Meyer
Self - Seelbach Hotel
Doug Platt
Self - Capitol Spokesman
Hank Bailey
Self - Odawa Elder
Aaron Swink
Jennifer Burnham
Self - Soil Scientist
Nigel Crook
Ernie Lundelius
Tim Kilgannon
Self - Owner: Blake Street Vault
Janet Monge
Self - Physical Antrhopologist
Peter Gavette
Self - Archaelogist
Jarrod Burks
John O'Shea
Rick Walker
Neffra Matthews
Ron Oremland
Self - Geomicrobiologist
Bill Steffen
Self - Meteorologist
Janet Watt