Tent tortoise Tent tortoise The tent tortoise ("Psammobates tentorius") is a species of tortoise and one of three members of the genus, "Psammobates". Known locally as the Karoo tent tortoise, this highly variable species is found in the Karoo and semi-desert regions of Southern Africa. The Karoo tent tortoise occurs at very low densities throughout the Karoo and other semi-desert areas of southern Africa, extending from central Namibia almost to the southern coast of South Africa. Within this range, its population is very sparse and individuals are normally rare and widely separated. The species is also increasingly rare due to habitat destruction
Ryn Desert can drop to a low of . Many small towns are scattered throughout the Ryn Desert, and population density is between 1 and 15 people per square mile. The Ryn lies in a semi-arid climate zone, and receives very little rainfall. High winds sweep across the desert, and in 2001 a dust storm in the Baltic Sea was determined as originating in the Ryn Desert. A study of long-range dust transportation to the Baltic Sea region—by analyzing dust pollution in Scandinavia, showed that aerosol concentrations there were influenced more by the Ryn Desert region than the Sahara Desert in Africa.