A cave in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 16, 2016
Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) from its bottom in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
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
Karst feature in Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015
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 in south central area. Qatar, February 19, 2010
Interior of Cave of Brightness (Musfer Cavern, Dahl Al Misfir) sinkhole in south central area. Qatar, February 19, 2010
Thorn Acacia (Acacia ehrenbergiana, local name Salam) trimmed by grazing camels in desert near Cave of Brightness in south central area. Qatar, February 19, 2010
Light beam in Cave of Brightness (Musfer Cavern, Dahl Al Misfir sinkhole) in Umm Al Shabrum south-west from Doha. Qatar, February 27, 2015