Natural pools at Isalo National Park (Southern Africa) from Amazing Places on Earth
Isalo National Park is in the Ihorombe Region of Madagascar. The park is known for its wide variety of terrain, including sandstone formations, deep canyons, palm-lined oases (pictured above) and grassland. A local guide is required for visitors entering the park, and guides and porters can be hired in the nearby town of Ranohira. Treks can last from several hours to a week or longer.