5 /5 Sean Nairn: This is a group of large boulders at the junction of the Great North Walk and Gundah Ridge tracks. You can walk to the top for filtered views of Berowra Creek, but not much else to see here so sit and ponder how long ago they crashed down to the valley floor from the cliffs above...No facilities here, youll need to walk to Berowra to the north or Crosslands to the south for water and toilets.