challenging hiking trail at the edge of the zin valley in israel

abstract ascent barren barrenness bleak bleakness blue boker boulder chalk challenge challenging clear cliff copy daunting desert desertscape detail difficult divshon ecotourism eye geological geology gravel green hazinim hiking israel limestone long maale marked marker mazuk nahal national nature near park perseverence phenomenon plateau prize ramat reserve rocky sandy sde sky space steep the touring trail travel valley vegetation way wilderness zin