Land - Covering over 69,000 sq miles, Cambodia is just smaller than Oklahoma.  Mountains lie to the north and southwest.  The center is basically flat, with a large lake, the Sonle Sap, roughly in the middle.  More than 75 percent of the land was once covered with forests and woodlands.  However, rampant logging has reduced that figure to less than 40 percent.  Cambodia's climate is tropical, and annual temperatures average between 80 degrees F and 100 degrees F.  The dry season is from December to April; the rainy season is from May to November.