Aeolian abrasion of limestone rocks (carved by drifting sand) in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Sand-blast type of wind abrasion in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
View from a crest of sand dune in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Sand mound with Leptadenia pyrotechnica in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Desert lizard Arabian toad headed agama (Phrynocephalus arabicus) in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Sedge (Cyperus conglomeratus)(?) growind at the foot of a sand dune in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Camouflaged desert lizard Arabian toad headed agama (Phrynocephalus arabicus) in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Some grass, probably sedge (Cyperus conglomeratus)(?), growing on a crest of sand dune in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Bush of Leptadenia pyrotechnica in Traina Sinkhole (karst depression) AOI 2 north-west of Khor Al Adaid. Southern Qatar, January 23, 2015
Desert rock carved by drifting sand (aeolian abrasion) in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Desert rock carved by drifting sand (aeolian abrasion) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Aeolian abrasion of limestone rocks (carved by drifting sand) at the foot of a sand dune near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Aeolian abrasion of limestone rocks (carved by drifting sand) south from Abu Nahlah. Qatar, April 25, 2014
Wind carved flint rocks (aeolian abrasion) in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Flat rocks wind-carved by drifting sand near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Flint rocks carved by drifting sand in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Violet flint rocks carved by drifting sand (sandblasted) in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Karst feature in Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
Wavy texture of aeolian sand at sunrise near Sealine Beach Resort near Mesaieed. Southern Qatar, December 11, 2015
Accumulation of drifting sand around bushy desert plants Cornulaca aucheri(?) in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Parasitic plant Cistanche tubulosa (desert hyacinth) emerging from sand near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, January 9, 2015
Purple shoot of parasitic plant Cistanche tubulosa (desert hyacinth) emerging from sand on Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, January 9, 2015
Sand-blast type of wind abrasion at the foot of a sand dune near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Sand ripples and sand mounds at sunrise near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Flowers of Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) in sand near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 6, 2015
Effects of wind abrasion on desert rocks in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Flower of Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) growing from sand near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 6, 2015
Flowers of Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) emerging from sand near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 6, 2015
Flower of Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) appearing from sand near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 6, 2015
Flower spike of Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) in sand near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, February 6, 2015
Fossil shark tooth (Galeocerdo(?)) embedded in a rock of Dammam Formation (Lower Dam limestones) in a site on flanks of Rawdat Al Heshaimiya(?) depression south from Trainah. Southern Qatar, November 6, 2015
Wind abrasion of rocks in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Seidlitzia rosmarinus in sand near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Eroded flint stones by drifting sand in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Wind abrasion of limestone cliffs in area of Nakhsh Mountain near Salwa Road in southern Qatar, May 8, 2015
Wind abrasion of limestone near Salwa Road in area of Rawdat Ekdaim. Southern Qatar, April 11, 2015
Sand-blast type of wind abrasion in dunes area south from Abu Nahlah. Qatar, June 23, 2015
Flint stone with a wind carved hole on desert plain in area of dunes near Harrarah, west from Mesayeed, south-west from Doha. Qatar, March 19, 2013
Sand mounds near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Sand mounds near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Ripples on a sand mound near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Texture of a sand mound near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Sand ripples at sunrise near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Sand mounds and ripples near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Sand ripples at sunrise near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Desert grass Panicum turgidum (local name Thummam) in sand on roadside of Salwa Road in area of Rawdat Ekdaim. Southern Qatar, March 21, 2015
Sand mounds and ripples at sunrise near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Sand ripples after windy weather near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Desert Campion (Silene villosa, local name terba) in sand near the spring in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, January 22, 2016
Seidlitzia rosmarinus growing on sand mounds near Sealine Beach Resort near Mesaieed, view to north-west. Southern Qatar, July 10, 2015
Sand Spurry (Spergularia diandra, Arenaria diandra, Spergula diandra, local name degaygah) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, January 23, 2016
Dry inflorescence of Desert Hyacinth (Cistanche tubulosa, dhanoon, Tartuth) in windblown sand on roadside of Salwa Road in area of Rawdat Ekdaim. Southern Qatar, April 11, 2015
Flowers of Sand Spurry (Spergularia diandra, Arenaria diandra, Spergula diandra, local name degaygah) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, January 23, 2016
Sand Spurry (Spergularia diandra, Arenaria diandra, Spergula diandra, local name degaygah) with a flower in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, January 23, 2016
Emerging parasitic plant Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, January 9, 2015
Independence Rock west from Casper, with names and messages allegedly carved by emigrants to the West in 1843-1869. Wyoming, July 22, 2010
Desert plant Andrachne telephioides in a silty depression near Al Nuaman (Numan) in north-western Qatar, October 24, 2015
Sand Spurry (Spergularia diandra, Arenaria diandra, Spergula diandra, local name degaygah) on white background in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, January 23, 2016
Branches of jointed glasswort (Halocnemum strobilaceum) in sand on Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, January 9, 2015
Flower buds of a parasitic plant Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) near Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, January 9, 2015
Sand Spurry (Spergularia diandra, Arenaria diandra, Spergula diandra, local name degaygah) with flowers on white background in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, January 23, 2016
Rock abrasion made by visiting tourists in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Tall plant of a parasitic plant Desert Hyacinth (Cistanche tubulosa, dhanoon, Tartuth) in windblown sand on roadside of Salwa Road in area of Rawdat Ekdaim. Southern Qatar, March 21, 2015
Mixture of drifting snow and sand near Snail Trail in Cape Cod. Provincetown, Massachusetts, January 18, 2005.
Texture of Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) from its bottom in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
Desert Thumb (Cynomorium coccineum, local name tartouth) emerging from sand in the area of Al Hamala (Al Hamlah) water well near Umm Bab. South-western Qatar, January 30, 2015
Desert Thumb (Cynomorium coccineum, local name tartouth) on a sand mound in the area of Al Hamala (Al Hamlah) water well near Umm Bab. South-western Qatar, January 30, 2015
Mixture of drifting snow and sand between dunes near Snail Trail in Cape Cod. Provincetown, Massachusetts, January 18, 2005.
Parasitic plant Desert Hyacinth (Cistanche tubulosa) with a host plant Arthrocnemum macrostachyum (glasswort, local name shnaan) in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, January 9, 2015
Bell weed (Ruellia prostrata) taken from Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Shallow depression in Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, March 7, 2015
Light beam in Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
Flowers of bell weed (Ruellia prostrata) taken from Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Desert plant Launaea(?) in sand near Trainah in southern Qatar, February 14, 2014
Morning beam of light in Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
Bell weed (Ruellia prostrata) on white background taken from Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Bell weed (Ruellia prostrata) on dark background taken from Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Wind carved wood on desert floor near Umm Bab in south-western Qatar, March 3, 2014
Sand mounds of windblown sand at sunrise near Sealine Beach Resort near Mesaieed. Southern Qatar, December 11, 2015
Side view of a flower of bell weed (Ruellia prostrata) taken from Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Flowers of bell weed (Ruellia prostrata) on white background taken from Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Rosette of leaves of a desert plant Launaea(?) in sand near Trainah in southern Qatar, February 14, 2014
Desert plant purslane-leaved aizoon (Aizoon canariense) in a roadside depression of Abu Samra Road in southern Qatar, February 11, 2014
Desert plant Filago desertorum (local name quTeyna) in sand near Trainah in southern Qatar, February 14, 2014
Sedge (Cyperus conglomeratus) in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, December 20, 2015
Blooming tamarisk (Tamarix aphylla) north from Al Khor Hospital. Qatar, January 30, 2015
Sand-blast type of wind abrasion south from Abu Nahlah. Qatar, April 25, 2014
Blooming bell weed (Ruellia prostrata) in a mat of trimmed Sesuvium plants on a lawn at Al Bidda Street near crossing with Al Adaid in West Bay. Doha, Qatar, April 28, 2015
Desert species of plantain (Plantago ciliata, local name Rablah) in sand near Trainah in southern Qatar, February 14, 2014
Desert plant Filago desertorum (local name quTeyna) growing in sand near Trainah in southern Qatar, February 14, 2014
Wind abrasion of limestone cliffs in Maszhabiya (Al Mashabiya) Reserve near Abu Samra. Southern Qatar, May 20, 2016
Camel bones in sand between Al Khor and Ras Luffan. Qatar, February 6, 2015
Yellow and maroon flower buds emerging from sand of a parasitic plant Cistanche tubulosa (desert hyacinth, dhanoon, Tartuth) appear in a desert after recent rains. Salt marsh near Mesaieed, Qatar, January 29, 2010
Inflorescence tamarisk (Tamarix aphylla) taken from area north from Al Khor Hospital. Qatar, January 30, 2015
Flowers of tamarisk (Tamarix aucheriana) taken from area north from Al Khor Hospital. Qatar, January 30, 2015
Inflorescence of tamarisk (Tamarix aucheriana) taken from area north from Al Khor Hospital. Qatar, January 30, 2015
Pink flowers of tamarisk (Tamarix aucheriana) north from Al Khor Hospital. Qatar, January 30, 2015
Atriplex leucoclada in a roadside depression east from Al Jebail water treatment plant. Al Khor, Qatar, January 23, 2016
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