Phosphate mines are a prominent feature in the central part of the area. The nearly level to gently rolling coastal plain has a sandy mantle of varying thickness over limestone. The land surface is very irregular because of the many sinkholes that dot the area. Local relief is mainly a few meters, but in places it is 25 m or more. Average annual precipitation -1,275 to 1,400 mm.
Maximum precipitation is in summer, and the minimum is late in autumn and in winter.
Rainfall and ground water supply an abundance of water. Wells in the cavernous limestone underlying much of the area yield large quantities of water that is highly mineralized but otherwise of good quality. There are many lakes in the sinkholes throughout the area but few perennial streams. The dominant soils are Psamments and Udults. They have a hyperthermic temperature regime and an udic moisture regime.