image: West bank of unnamed gulley (Grid Ref H116292); unfossiliferous shales of Dergvone Shale Formation; prominent rib at figure is the Lacoon Sandstone Member.
West bank of unnamed gulley (Grid Ref H116292); unfossiliferous shales of Dergvone Shale Formation; prominent rib at figure is the Lacoon Sandstone Member.
 
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