sentences:  It has been much visited at one time, with the clear remains of a footbridge running to it across the Hareshawmuir Water.The Grannie Stane (or Granny Stane) is described as "one of Irvine's prehistoric puzzles", this boulder is either left behind from the Ice Age or is the last remaining stone of a stone circle – others were removed, by blasting, after the Irvine weir was constructed in 1895, but popular protests saved this remaining stone.The Grannie Stane is visible when the water is low.