Manhattan Schist #1
John Kaprielian
Manhattan Schist
John Kaprielian
Dunluce Castle Ruins, Northern Ireland
James Steinberg
Dunluce Castle Walls, Northern Ireland
James Steinberg
Flowers On Stone Walls, Dunluce Castle
James Steinberg
Dunluce Castle Ruins, Northern Ireland #1
James Steinberg
Dunluce Castle, County Antrim, Northern
James Steinberg
Dunluce Castle, Northern Ireland
James Steinberg
Sandstone Formation, Castle Gardens, Wy #2
Millard H. Sharp
Igneous Outcrop
E.r. Degginger
Cliffs Of Tsingy Limestone, Madagascar
Greg Dimijian
Caesars Head, South Carolina
Larry Cameron
Tertiary Basalt
A.b. Joyce
Tsingy Limestone, Madagascar
Greg Dimijian
Sandstone Formation, Castle Gardens, Wy
Millard H. Sharp
Sandstone Formation, Castle Gardens, Wy #3
Millard H. Sharp
Point Reyes Historic Lighthouse
Ron Sanford
Columnar Basalt In Idaho
William H. Mullins
Crumpled Strata Of Metamorphic Rocks
Gregory G. Dimijian, M.D.
Sandstone Formation, Castle Gardens, Wy #1
Millard H. Sharp
Sandstone Formation, Castle Gardens, Wy #4
Millard H. Sharp
Pancake Rocks, New Zealand
A.b. Joyce
Metamorphic Rock In North Carolina
Kenneth Murray
Devils Postpile National Monument
Brenda Tharp
Devils Postpile National Monument #1
Brenda Tharp
Conglomerate In Death Valley
Brenda Tharp
Rocks At Hermanus, South Africa
Gerard Lacz
Sandstone Formation, Castle Gardens, Wy #5
Millard H. Sharp
Folded Rock With Anticline
Dan Guravich
Basalt Outcropping At Zumwalt Prairie
William H. Mullins