I went by ferry to the Isle of Purbeck. The ferry boat was new and hauled itself along on giant chains which lay on the seabed. I came ashore and joined a smooth road heading south.
The Agglestone is a mile from the road. There is a problem with erosion: the land is being washed away. The paths and tracks are badly worn. Cycling is not allowed: I had to carry my bike most of the way. Perched on top of the sparse hill, the Agglestone looked out of place: it has resisted erosion, while the soft rock around it has gone. It casts a long and sinister shadow.
A man watched as I approached, carrying my bike. 'You're not supposed to ride bikes up here,' he said.