After teaching Dive to a Pokemon, you can move onto the dive spots and use the move to head underwater. Once you're below the surface, press and hold 'Up' on the D-Pad or Circle Pad until you reach the entrance of the ruins and head on through.
Friday: The Jericho forecast for Feb 16 is 54 degrees and Patchy rain possible. There is 87 percentage chance of rain and 11 mph winds from the West-Northwest. Saturday: The Jericho forecast for Feb 17 is 32 degrees and Partly cloudy.
  The Battle of Jericho, besides being a familiar Negro spiritual, was a battle at the town of Jericho near the west bank of the Jordan River, NNW of the Dead Sea, in what is now Israel, in about 1440 BC. Jericho has since been rebuilt near the original site.