| A relatively resistant chalk ridge ran continuously from the Purbeck Hills to the Isle of Wight, which the rivers could not break through. |
| The limestone used was imported from Caen in Normandy, and Purbeck marble was used for the shafting. |
| But it's being plastered, it's having Purbeck stone flooring, which is a hardline stone from the Swanage area in south of England. |
| The Needles, along with Old Harry Rocks on Purbeck, represent the edges of this breach. |
| Only in the west, on the Isle of Purbeck, did some minor southward drainage develop across the monocline. |
| By contrast, also at Chelsea, Mark Gregory's stunning design to incorporate a garden home office had Purbeck stone stepping stones making a pathway over a still pool. |
