A dead tree and Reiser Prairie from a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
Slopes of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
Slopes of Chisos Mountains east from Boot Spring Trail. Big Bend National Park, November 27, 2009
Alpine forget-me-not (Eritrichum aretioides) flowers carpeting the slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
View from a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
Small limestone arch on a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
A dried tree on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
Alpine tundra on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
View from a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Exfoliation of slope of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Alpine phlox(?) flowers on the slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
View of a slope of Colony Baldy Mountain from Macey Lakes Trail in Sangre de Cristo Mountains. Colorado, July 2, 2007
Crestone Peak from a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
Slopes of Chisos Mountains from Boot Spring Trail. Big Bend National Park, November 26, 2009
Slope of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Dwarf cinquefoil and white alpine phlox wildflowers on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
Rocks on a slope of Freshman Mountain east from Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
Southern slope of Ramon s Tooth resembling Eilat Mountains, 5 miles south-east from Mitzpe Ramon. The Middle East, May 3, 2001
Dwarf sunflowers (Old-man-of-the-mountain, Rydbergia grandiflora, Hymenoxys grandiflora) on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
Cracked limestone on a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Alpine Sandwort (Lidia obtusiloba, Minuartia biflora) on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
View of mountains in Sinai north-west from a slope of Mount Yoash, 4 miles north-west from Eilat. The Middle East, January 17, 2002
Limestone shelters on a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
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
Black flint stones on a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Slopes of Frijole Mountain from McKittrick Canyon Trail. Guadalupe Mountains National Park, Texas, December 28, 2007
Limestone on a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Sandy runnel from a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Sandy path from a mountain slope in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Grazing camels from a mountain plateau on the slope of Jebel Al-Nakhsh in south-western Qatar, April 2, 2016
Mountain slope in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, June 25, 2016
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
