Cup- and groove-marked boulder, Osmaril Gill, Barningham Moor, Teesdale (Barningham Moor)
8 cup-markings on a boulder, Osmaril Gill, Barningham Moor, Teesdale 1980-1997
Illustration of a cup-and-groove-marked boulder, Osmaril Gill, Barningham Moor 1980-1997
21st Century (2001 to 2100)
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