The landscape of East Devon is largely man made, shaped by man's activities from prehistoric times to the present. However, the underlying geology has influenced this process. The geology of the AONB ranges from the infertile Triassic sandstone of the pebble bed heaths in the west, to the more fertile Jurassic and Cretaceous sandstones and limestones in the east.
This geology gives rise to a diverse landscape which in turn helps to provide the conditions on which our rich and abundant biodiversity can thrive. We are able to assess this landscape variation and define its character through a nationally recognised assessment process that provides us with units or 'landscape types'.