Larger #3954 Rockhouse (Shelter Cave) Interior (Mar 26, 2006), Buffalo National River -- Buffalo Point, Harriet, AR, 2
Larger #5221 Looking Down from Hieroglyphics Canyon (Feb 21, 2010), Tonto NF Hieroglyphics Canyon Trail, Gold Canyon, AZ, 4
Larger #5220 Morteros in the Desert (Feb 21, 2010), Tonto NF Hieroglyphics Canyon Trail, Gold Canyon, AZ, 4
Larger #5219 Petroglyphs on Sandstone Close-up (Feb 21, 2010), Tonto NF Hieroglyphics Canyon Trail, Gold Canyon, AZ, 4
Larger #1898 Petroglyph of Animals and Abstract Geometric Designs (Dec 10, 2001), Petrified Forest National Park, Holbrook, AZ, 2
#1897 Petroglyph of Heron with Frog (Dec 10, 2001), Petrified Forest National Park, Holbrook, AZ, 2
#1899 Petroglyph of Pronghorn (Dec 10, 2001), Petrified Forest National Park, Holbrook, AZ, 2
#1896 Petroglyphs (Dec 10, 2001), Petrified Forest National Park, Holbrook, AZ, 3
Larger #4664 Rain Pictographs (Apr 03, 2009), Coconino National Forest -- Palatki, Sedona, AZ, 2
Larger #4662 Inside a Room at Ancient Palatki Ruins (Apr 03, 2009), Coconino National Forest -- Palatki, Sedona, AZ, 2
Larger #4665 Charcoal Pictographs (Apr 03, 2009), Coconino National Forest -- Palatki, Sedona, AZ, 2
Larger #4663 Tour Group at Palatki Ruins (Apr 03, 2009), Coconino National Forest -- Palatki, Sedona, AZ, 2
Larger #1525 Leadfield Shack Detail (Apr 15, 2009), Death Valley NP Titus Canyon (Amagorsa Mtns.), Inyo County, CA, 4
Larger #1521 Leadfield Shack View (Apr 15, 2009), Death Valley NP Titus Canyon (Amagorsa Mtns.), Inyo County, CA, 4
Larger #2185 Pictographs (Mar 08, 2003), Anza-Borrego Desert Piedras Grandes, Ocotillo, CA, 2
#5908 Cannon Detail (Nov 04, 2011), Castillo de San Marcos National Monument, Saint Augustine, FL, 3
Larger #5904 Courtyard Door (Nov 04, 2011), Castillo de San Marcos National Monument, Saint Augustine, FL, 3
Larger #5907 Cannon Collection (Nov 04, 2011), Castillo de San Marcos National Monument, Saint Augustine, FL, 3
Larger #5909 Coquina -- Poorly Cemented Limestone (Nov 04, 2011), Castillo de San Marcos National Monument, Saint Augustine, FL, 3
Larger #5906 Eighteenth Century Spanish Mortar (Nov 04, 2011), Castillo de San Marcos National Monument, Saint Augustine, FL, 3
Larger #5901 Chesser Island Homestead (Nov 03, 2011), Okefenokee East Entrance, Folkston, GA, 3
Larger #4469 Stick Figure Petroglyph Close-up (Jan 12, 2008), Puako Petroglyphs Archeological Park, Puako, HI, 3
Larger #4468 Petroglyph Field (Jan 12, 2008), Puako Petroglyphs Archeological Park, Puako, HI, 2
Larger #3790 Conical Indian Mounds (Oct 19, 2005), Pikes Peak State Park, McGregor, IA, 2
Larger #4121 Ancient Wall Along Stone Fort Trail (Nov 04, 2006), Giant City State Park, Carbondale, IL, 2
Larger #5796 Wall Ascending a Hill (Jun 11, 2011), Indian Pond, Orford, NH, 2
Larger #3613 Eroding Petroglyphs (Apr 18, 2005), Red Rock Canyon National Conservation Area, Las Vegas, NV, 2
Larger #5911 Sheldon Church Ruins (Nov 01, 2011), Sheldon Church, Beaufort, SC, 3
Larger #5912 Sheldon Church Framed by Live Oak (Nov 01, 2011), Sheldon Church, Beaufort, SC, 3
Larger #5913 Sheldon Church and Grave (Nov 01, 2011), Sheldon Church, Beaufort, SC, 3
Larger #5910 Sheldon Church Sign (Nov 01, 2011), Sheldon Church, Beaufort, SC, 3
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