Aab in persian language means water
Sefid in persian language means white
So it is white water waterfall

آبشار آب سفید در دره ی الموت

عکس از یک فسیل زیر آب در کویر آب سفید در منطقه ی فسیل آباد کاشان

This is a picture of a fossil in the Sefid-AAb desert in the region which is known as fossil-abad. Abad means region.