 Area of mihrab (semicircular prayer niche) in qibla wall inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Old plywood mosque near Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Plywood mosque near Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Roots of beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Clump of beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Beaked tasselweed (widgeongrass, Ruppia maritima) with roots extracted from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) with roots taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Narrow leaves of beaked tasselweed (widgeongrass, Ruppia maritima) taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) submerged in Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) extracted from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Brittle naiad aquatic plant (Najas marina) on dark background taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Spiny leaves of brittle naiad aquatic plant (Najas marina) from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Toothed leaves of brittle naiad aquatic plant (Najas marina) extracted from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Toothed leaves of brittle naiad aquatic plant (Najas marina) with serrate edges taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Toothed leaves of brittle naiad aquatic plant (Najas marina) on dark background taken from Abu Nakhla wastewater treatment ponds. Doha, Qatar, February 27, 2015
 Qiblah wall with mihrab in prayer hall (musallah) of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Qiblah wall with mihrab in prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Old plywood mosque near Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Qiblah wall with mihrab in prayer hall in Iranian style mosque in Katara Cultural Village at morning. Doha, Qatar, October 8, 2015
 Evans bluetail damselfly (Ischnura evansii) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Blue dome and traces of a chandelier in a plywood mosque near Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Birdwatching with QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Qiblah wall with mihrab in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Watching birds with QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Qiblah wall with mihrab in prayer hall (musallah) in State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Bright mature male broad scarlet dragonfly (Crocothemis erythraea) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Broad scarlet dragonfly (Crocothemis erythraea) in obelisk position near a service road of Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Female broad scarlet dragonfly (Crocothemis erythraea) holding its abdomen up (obelisk position) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Group of birdwatchers from QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Qiblah wall with mihrab in prayer hall of Iranian style mosque in Katara Cultural Village. Doha, Qatar, October 10, 2014
 Group of birdwatchers from QNHG (Qatar Natural History Group) on a service road near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
 Red carpet inside prayer hall (musallah) showing praying rows parallel to the qiblah wall in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Texture of qiblah wall in prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Prayer hall (musallah) inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Vaulted prayer hall (musallah) inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Red carpet showing direction to pray in rows parallel to qiblah wall inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Golden texture of mihrab of Education City Mosque. Doha, Qatar, October 12, 2015
 Galleries of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Red carpet of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Vaults of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Arches of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Arches and columns of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Vaults and columns of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Entrance side of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Arches and chandeliers of prayer hall of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Domed structure of prayer hall (musallah) of State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque) at morning. Doha, Qatar, January 15, 2015
 Prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Dome of prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Pattern of prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Benches of prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Balcony of prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Green carpet of prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Side entrance of prayer hall of Education City Mosque. Doha, Qatar, October 12, 2015
 Dried caked mud of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Texture of dried caked mud of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried caked mud on the bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried Abu Nakhla jail ponds (sewage lagoons), with caked mud at the bottom. Qatar, April 18, 2015
 Shrinking water reservoir of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Prayer hall of State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Dried caked mud covering the bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Widgeon Grass (Ruppia maritima) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Domed prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Prayer hall (musallah) of State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Arches of prayer hall of State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Vaulst of prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Vaults of prayer hall of State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Red carpet inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Chandeliers inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Balconies inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Entrance space in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Multitude of columns in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Vaults and columns in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Hypostyle form of prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Evening lighting of prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Carpet and chandelier of prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Vaulted arches of prayer hall of State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Evening light in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Balconies with windows in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Widgeon Grass (Ruppia maritima) with flowers in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Domed ceiling inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Chandelier in a dome inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Columns and chandeliers inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Entrance space in prayer hall (musallah) of State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Grass Sporobolus spicatus growing on dried bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Large hall with columns and chandeliers inside State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Stand of aquatic plant Widgeon Grass (Ruppia maritima) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dying aquatic plant of brittle naiad (Najas marina) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Large hall with columns and chandeliers inside State Mosque (Sheikh Imam Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, November 27, 2013
 Hypostyle form (roof held up by a multitude of columns) in prayer hall (musallah) in State Mosque (Sheikh Muhammad Ibn Abdul Wahhab Mosque). Doha, Qatar, April 4, 2013
 Cluster of fruits of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dense stand of aquatic plant Widgeon Grass (Ruppia maritima) in Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried aquatic plants of brittle naiad (Najas marina) in caked mud of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Fruits and a flower of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Close up of pea shaped fruits of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Membranous sheath with a flower(?) of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Close up of membranous sheath of aquatic plant Widgeon Grass (Ruppia maritima) taken from Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
 Dried aquatic plants of brittle naiad (Najas marina) on muddy bottom of Abu Nakhla jail ponds (sewage lagoons). Qatar, April 18, 2015
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