Buzzard s Roost from the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Rocks of abandoned marble quarry in Ruskeala Mountain Park. Karelia, Russia, September 19, 2015
Exfoliation of granite slabs from the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Marble rocks near a quarry in Ruskeala Mountain Park. Karelia, Russia, September 19, 2015
Large rocks near marble quarry in Ruskeala Mountain Park. Karelia, Russia, September 19, 2015
View in direction of Enchanted Rock from the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Exfoliation of slope of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Lawn rocks of olivine (?) on Geological Trail through Timna Mountains. The Middle East, March 15, 2001
Erosion of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Spring flowers on rocks of Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
Rocks on Devils Hall Trail in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Gypsum rocks (selenite) in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Slope of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Rocks near parking at Clingmans Dome. Smoky Mountains National Park, Tennessee, May 18, 2007
Rocks in Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Split rock and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
Rocks on a slope of Freshman Mountain east from Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
Aerodynamically eroded limestone rocks (wind abrasion) on a tabletop mountain in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, June 25, 2016
Rock-shield lichen (Xanthoparmelia) on cracked pink granite of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Moonglow lichen (Dimelaena oreina)(?) on pink granite of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Large granite stone covered by cracked lichen Acarospora novomexicana (yellow) and firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) (red) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Passage between stones on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 24, 2007
Big rocks near Devil s Hall in Pine Spring Canyon. Guadalupe Mountains National Park, Texas, December 28, 2007
Spring flowers among rocks in a riverbed near a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
Wind abrasion of rocks in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Mountain goat standing on rocks of northern tip of Haloul Island (Jazirat Halul). Qatar, April 19, 2013
Hedgehog, or claret cup cactus (Echinocereus triglochidiatus) on the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Rocks and El Capitan Mountain from a trail near Guadalupe Spring in Guadalupe Mountains National Park. Texas, December 27, 2007
Cactus on rocks of El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
Blue-edged scale lichen (Psorula rufonigra) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Prismatic rocks in High Mountain Park. Paterson, New Jersey, March 25, 2007
Lace cactus (Echinocereus reichenbachii) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Weathered stones on a slope of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
Cacti on a slope of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 24, 2007
Field of weathered rocks in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Mountain goat standing on gypsum rocks of northern tip of Haloul Island (Jazirat Halul). Qatar, April 19, 2013
Weathered limestone rocks in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Sandblasted rocks in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Field of sandblasted rocks in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Aerodynamically eroded rocks on a tabletop mountain in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, June 25, 2016
Aerodynamically eroded rocks (wind abrasion) on a tabletop mountain in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, June 25, 2016
Thorny cluster of hedgehog, or claret cup cactus (Echinocereus triglochidiatus) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Rock-shield lichen (Xanthoparmelia) on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Zigzag cliff-brake fern (Pellaea ovata) in shade of big rocks on Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Base of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Large slabs of granite at the base of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Slope of the dome of Enchanted Rock in area of Turkey Pass, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Weathered pedestal rocks at the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Dome of Enchanted Rock from the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Cracked lichen Acarospora novomexicana (yellow) and firedot lichen Fulgogasparrea appressa (Caloplaca appressa)(?) (red) on pink granite of Freshman Mountain in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
