The rocks that lie beneath Exmoor have defined its landscape, land use and settlement patterns. Most of Exmoor's rocks were formed during the Devonian period of geological history between about 410 and 360 million years ago.
For a detailed exploration of Exmoor's geology have a look through:
Geology on Exmoor (pdf)
The map below shows some of the best places to explore the rocks that lie beneath the Exmoor Landscape.