The first wave at Zin stream, en.wikipedia.org/wiki/Makhtesh_Ramon in the Negev desert, Israel.The Zin stream flows from north Makhtesh Ramon to the en.wikipedia.org/wiki/Dead_sea [About 120 Km] and comes once in a few years..; Beautiful sight of nature that's rarely caught .. The location is called "The Step"... Scholars still argue whether the stream is the biblical Sin or Zin stream..Sources: www.youtube.com/watch?v=bMm8wWNo7cA