Pete Tillman:
Frog Rock
Pete Tillman:
Green reefs of Hazard
Pete Tillman:
Dogtooth quartz....
Pete Tillman:
Boxwork closeup
Pete Tillman:
Stockwork
Pete Tillman:
Tafoni and gravel, Moonstone beach, Cambria
Pete Tillman:
Tafoni and fractures
Pete Tillman:
Malachite, Copperbelt, probably Katanga.
Pete Tillman:
Brochantite on wood, (probably) Katanga
Pete Tillman:
Mars sediments
Pete Tillman:
Dunes in Abalos Undae, Mars
Pete Tillman:
Creature from the Black Lagoon
Pete Tillman:
Azurite-cemented breccia from Morenci, AZ
Pete Tillman:
Trees on Mars?
Pete Tillman:
Martian polar dunes at Olympia Undae
Pete Tillman:
Mars dune rock
Pete Tillman:
Namib dune, Gale Crater
Pete Tillman:
Tilted beds in the surf
Pete Tillman:
Ragged_top,_late_afternoon
Pete Tillman:
Tight fold in radiolarian chert ~ Explored
Pete Tillman:
West side of San Simeon point
Pete Tillman:
Monterey formation sea stack ~ Explored
Pete Tillman:
Monterey fm bluff and shoreline
Pete Tillman:
Mountain panorama from SR 154, SB county CA
Pete Tillman:
Temblor view from Elkhorn Rd
Pete Tillman:
End of the trail
Pete Tillman:
"What big teeth you have...."
Pete Tillman:
A Martian South Polar collapse pit, or an impact crater?
Pete Tillman:
Full Moon over Great Sand Dunes and MedanoCreek
Pete Tillman:
Detail of fallen arches