The Dasht - e - Kawir (great kawir) in the center of Iran, is a coIlction of basins, which in general is divided into two main Hydrographical basins, Between them there are stretches an extensive area, which covering a lot of anticlines and several smaller basins. Physical features in the arid central basins of Iran are exterernely diverse and many have individual persian names.
One of the Eruopean researchers, says, ‘kawir denotes an expanse of slime or mud viscous rather than free flowing with frequent salt effiorescence, or continuous thick layers at the surface.” There are several theories as to formation of the Dasht-e-Kawir.
Dasht-e-Kawir is bordered by the marginal villages and towns, which there are many similarities in these area. The Sar-Kawir area in the north and Biabanak area in the south of the Dasht-e-Kawir, have been important in the past, because there are on the caravan routes loading north and south.
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