image: Gulley through Porphyritic Felsite ring-dyke, with quarry face just visible on right-hand side of distant hill; light coloured Newry Granodiorite to the left of quarry, with darker rock near the summit marking flow-banded margin of ring-dyke.
Gulley through Porphyritic Felsite ring-dyke, with quarry face just visible on right-hand side of distant hill; light coloured Newry Granodiorite to the left of quarry, with darker rock near the summit marking flow-banded margin of ring-dyke.
 
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