Stonehenge was built by Britain's ancestors thousands of years ago by moving, cutting, and placing it exactly where it should have been. They plane the rough surface, grind the sharp edges into a smooth curve, and then dig holes to allow the stake to pass through. The stone had been exposed to the sun for a long time, and it had many odd-looking holes in its surface. The stones that make up the monument, a bluestone from mount pillisley in southern wales, are 400km from the current site, and according to some evidence gathered, the huge stones were transported by glaciers during the ice age.