Within the southwestern Ihorombe region, this national park is known for its varied and unique terrain. Centuries of wind and rain erosion have whittled the landscape of Isalo National Park into a series of deep gorges, vast canyons and bizarrely shaped sandstone rock formations, punctuated by palm-lined oases and sprawling grasslands. This spectacular scenery makes the park a magnet for hikers, with treks ranging from a few hours to several days. Besides the striking vistas the park affords, visitors will also be able to enjoy cooling off in the natural swimming holes dotted across it and catch glimpses of the resident lemurs and other endemic wildlife species.