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Area: 75.4 hectares.

A new site.
Part of the Regional Headquarters Estate of the National Trust. 

Description and Reasons for Notification: 

The site covers much of Killerton Park and the quarries therein, and is one of the more accessible examples of Permain basalt-like rocks known as lamprophyres. The lamprophyres here are typical biotite-phyric minettes and although field relationships are often obscure, they are considered to be lava flows rather than the usual dyke-like bodies seen elsewhere.