Step from column to column across the Giant's Causeway

The Giant's Causeway is more than forty thousand basalt columns at the edge of the sea on the north coast, packed so close that their tops make a floor.

The way down is a trail of under a mile from the visitor building, or a small electric shuttle bus for anyone who would rather ride. Walking to the stones costs nothing.

Then the point of it: column to column, out toward the water.

The columns formed around sixty million years ago.