Takir / Turkmenistan, Karakum Desert
Takir (Takyr) (Russian: Такыр, originally from Kazakh or another Turkic language) is a type of relief occurring in the deserts of Central Asia, similar to a playa in the south-western United States. A takyr is usually formed in a shallow depressed area with a heavy clay soil, which is submerged by water after seasonal rains. After the water evaporates, a dried crust with fissures forms on the surface. The crust is primarily formed by filamentous cyanobacteria (en.wikipedia.org/wiki/Takir_(soil).