Ontika Limestone cliff and Gulf of Finland from observation platform in Saka near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Valaste Falls and Ontika Limestone cliff in Ontika near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Ontika Limestone cliff above Karjaoru Falls near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Martsa waterfall on Ontika Limestone cliff near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Ontika Limestone cliff with Kivisilla Falls near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Frozen Kivisilla Falls of Ontika Limestone cliff near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Frozen Martsa Falls below Ontika Limestone cliff in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
A trail below Ontika Limestone cliff along Gulf of Finland in Toyla - Oru Park in Kaasiku near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Forest along Gulf of Finland near Karjaoru Falls in Saka near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Frozen Valaste Falls in Ontika near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Icy Martsa Falls in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Martsa waterfall in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Frozen Martsa Falls in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Icecles of Martsa Falls in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Martsa Falls in winter in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Icy masses of Martsa Falls in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Snow and ice of Martsa Falls in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Winter view of Martsa Falls in Toyla - Oru Park near Kohtla-Jarve. Ida-Viru County, Estonia, February 10, 2018
Guard towers of Viru Gate at Viru 26 in Tallinn old town. Estonia, August 14, 2024
Intimo and Viru 17 shops in Tallinn old town. Estonia, August 14, 2024
Stone hut nestling under a limestone cliff remained from television production in Ras Abrouq peninsula in west central coastal area, north from Zekreet. Qatar, February 13, 2010
Limestone cliff on Jebel Fuwairit. Qatar, October 3, 2014
Limestone cliff at sunrise on Jebel Fuwairit. Qatar, October 3, 2014
Limestone cliff in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Overhanging limestone cliff in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
Mushroom-shaped limestone cliff in Harrarah (Al Kharrarah). Southern Qatar, March 27, 2015
A small limestone cliff near Chalcolithic temple in Ein Gedi. The Middle East, January 24, 2002
Edge of a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Top section of a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
Broken limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
View from a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
Edge of a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
Vegetation around a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
Sandy area below a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Mushroom shaped limestone cliff in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Broken part of a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 1, 2016
Plant of Agriophyllum minus in sand below a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Tribulus macropterus var. arabicus in sandy area below a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Plant of Agriophyllum minus in windblown sand below a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Plant of Agriophyllum minus in sandy area below a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Blooming Tribulus macropterus var. arabicus in sandy area below a limestone cliff in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, April 8, 2016
Port Sullivan Church at County Road 262, Milam County. Texas, July 24, 2022
Unicorn plant (devil s claw, Proboscidea loisianica) on roadside of County Road 264 in Branchville, Milam County. Texas, July 24, 2022
Tippecanoe County Amphitheater near Battle Ground, Indiana, February 14, 1998.
Breakers Mansion before sunrise, view from Cliff Walk trail. Newport, Rhode Island, February 6, 2005.
A small cliff on the southern side of the Bokek creek canyon, view to the north. The Middle East, February 22, 2001
Vineland Mansion of Salve Regina University from Cliff Walk in Newport at sunrise. Rhode Island, February 5, 2004, 7:05 a.m.
Zigzag cliff-brake fern (Pellaea ovata) on slope of the dome in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Ochre Court Mansion of Salve Regina University from Cliff Walk in Newport at sunrise. Rhode Island, February 5, 2004, 7:02 a.m.
Cliff Walk Trail at crossing with Ruggles Avenue, near Ochre Point at morning. Newport, Rhode Island, February 6, 2005.
Rocky shore of Atlantic Ocean at sunrise, view from Cliff Walk trail. Newport, Rhode Island, February 6, 2005.
Fossilized oyster sea shells Ostrea latimarginata(?) in a limestone layer (Dukhan Limestone Member) of Dammam Formation in Jaow Al Hamar depression south from Trainah. Southern Qatar, November 6, 2015
Limestone escarpments near Harrarah in southern Qatar, February 14, 2014
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
Ternate cliff-brake fern (Pellaea ternifolia) and spikemoss Selaginella corallina in a stone depression in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Rough Point from Cliff Walk at Sheep Point. Newport, Rhode Island, February 5, 2004.
View in direction of Rough Point from Cliff Walk at Sheep Point. Newport, Rhode Island, February 5, 2004.
Low limestone cliffs in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 19, 2010
Chalky limestone in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Low limestone hills in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 19, 2010
QNHG (Qatar Natural History Group) exploring fossils in limestone layer (Dukhan Limestone Member) of Dammam Formation in Jaow Al Hamar depression south from Trainah. Southern Qatar, November 6, 2015
Forest on Ridge Trail near Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
Limestone rocks in a desert on roadside of a road to Sawda Natheel. Southern Qatar, February 5, 2016
Erosion of beach limestone in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 14, 2015
Midcliff, Fairhaven and Angelsea mansions near Ochre Point from Cliff Walk at Sheep Point. Newport, Rhode Island, February 5, 2004.
View in direction to Rough Point from Cliff Walk at Sheep Point, behind Gull Rock tunnel. Newport, Rhode Island, February 5, 2004.
Sand covering chalky limestone in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Tiny fossilized echinoderm or sea urchin in limestone in coastal area in south-western Qatar, February 7, 2014
Blunt-lobed cliff fern (Woodsia obtusa) on moss at a creek crossing in Lick Creek Park. College Station, Texas, February 1, 2021
Dogwood in a forest on Ridge Trail east Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
Prairie sandbur (Trailing Ratany, Three Fans, Krameria lanceolata) on limestone on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 21, 2018
Stone houses at Kiriku 4 in Tallinn old town. Estonia, August 14, 2024
Goodwin and McDonalds at Muurivahe 38a in Tallinn old town. Estonia, August 14, 2024
Small shops at at Muurivahe 30 in Tallinn old town. Estonia, August 14, 2024
Rough Point, New Lodge and Ocean View mansions from Cliff Walk at Sheep Point, behind Gull Rock tunnel. Newport, Rhode Island, February 5, 2004.
Rough Point, New Lodge and Ocean View mansions from Cliff Walk at Sheep Point, behind Gull Rock tunnel. Newport, Rhode Island, February 5, 2004.
Stratified layers of limestone and Miocene deposits of the Dam Formation on the slope of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Limestone cliffs with fossils on Ras Abrouq peninsula in west central coastal area, north from Zekreet. Qatar, February 13, 2010
A small spring flower on a limestone plateau in Judean Desert south from Nahal Mishmar. The Middle East, February 21, 2002
View of St. Nicholas Church from Ruutli 9 in Tallinn old town. Estonia, August 14, 2024
Hungarian Institute at Kiriku Plats 1 in Tallinn old town. Estonia, August 14, 2024
Ministry of Economic Affairs and Communications at Harju 46 in Tallinn old town. Estonia, August 14, 2024
Cinema Soprus and Club Hollywood at Muurivahe 16 in Tallinn old town. Estonia, August 14, 2024
Red roofs and bay from Kohtuotsa viewing point at Kohtu 12 in Tallinn old town. Estonia, August 14, 2024
Pale green house at Raekoja Plats 4 in Tallinn old town. Estonia, August 14, 2024
Small pink brittlegill (Russula) mushrooms in muddy area of baygall forest on D. L. property. Bleakwood, Newton County, Texas, June 11, 2022
Saint Alexander Nevsky Cathedral at Lossi Plats in Tallinn old town. Estonia, August 14, 2024
Stone fence and a red house at Kiriku 8 from Toom-Kooli 21 in Tallinn old town. Estonia, August 14, 2024
Ancient houses from Kohtuotsa viewing point at Kohtu 12 in Tallinn old town. Estonia, August 14, 2024
Button lichen (Buellia) on limestone in Old Independence Cemetery near Independence. Texas, February 10, 2019
Buttoned rosette lichen (Pyxine) on limestone in Old Independence Cemetery near Independence. Texas, February 10, 2019
Limestone gallery in Gatchina Palace. Gatchina, suburb of Saint Petersburg, Russia, February 12, 2013
Button lichen (Buellia) on a limestone tomb in Old Independence Cemetery near Independence. Texas, February 10, 2019
Underside of small fibrecap mushrooms Inocybe paludinella(?) in a dried swamp of baygall forest on D. L. property. Bleakwood, Newton County, Texas, June 11, 2022
Gills of small fibrecap mushrooms Inocybe paludinella(?) in a dried swamp of baygall forest on D. L. property. Bleakwood, Newton County, Texas, June 11, 2022
A cliff and forest of Enfield Glen, view from Rim Trail, in Robert H. Treman State Park. Ithaca, New York, November 2, 2005
Greenish buttoned rosette lichen (Pyxine) on limestone in Old Independence Cemetery near Independence. Texas, February 10, 2019
Interior of Saint Alexander Nevsky Cathedral at Lossi Plats 10 in Tallinn old town. Estonia, August 14, 2024
Towers and walls from Patkuli viewing platform at Toom-Ruutli 12 in Tallinn old town. Estonia, August 14, 2024
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