ancient stone nabatean agricultural terrace in the negev desert in israel

agricultural agriculture ancient archaeology area arid artifact bed boker byzantine control culture dam dedesertification desert desertification divshon dry ecotourism erosion flood habitat highlands hiking historic history inaccessible isolated israel landscape location loess nabatean nahal nature near negev outdoor period plants plateau remote reserve retaining reverse sde sparse stone stream terrace terracing travel valley vegetation wadi wall wilderness zin