National Geographic : 1942 Jun
Not Bomb Craters-Just Water Holes Dug by Malagasy in Their Constant Searchfor Springs inDry Season Here on Madagascar's central plateau, underground water arteries exist. Often a hundred holes must be dug to discover thesubterranean channel. Once itisfound, there is no assurance the stream will remain in its underground course. When it shifts,new holes must bedug.