60
    • P531108
    • Corsehill quarry.
    • P512489
    • Achscrabster Quarry (New), Thurso,...
    • P512500
    • Achscrabster Quarry (New), Thurso. View...
    • P512504
    • Achscrabster Quarry (New), Thurso. View...
    • P512561
    • Achscrabster Quarry (New), Thurso....
    • P1030950
    • Photograph of a sample of Ballagan...
    • P1030951
    • Photograph of a sample of Ballagan...
    • P1030952
    • Photograph of a sample of Ballagan...
    • P1030953
    • Photograph of a sample of Ballagan...
    • P1030954
    • Photograph of a sample of Ballagan...
    • P1030955
    • Photograph of a sample of Ballagan...
    • P1030956
    • Photograph of a sample of Ballagan...
    • P1030957
    • Photograph of a sample of Ballagan...
    • P1030958
    • Photograph of a sample of Ballagan...
    • P1030959
    • Photograph of a sample of Ballagan...
    • P1030960
    • Photograph of a sample of Ballagan...
    • P1030961
    • Photograph of a sample of Ballagan...
    • P1030962
    • Photograph of a sample of Ballagan...
    • P1030963
    • Photograph of a sample of Ballagan...
    • P1030964
    • Photograph of a sample of Ballagan...
    • P1030965
    • Photograph of a sample of Ballagan...
    • P1030966
    • Photograph of a sample of Ballagan...
    • P1030967
    • Photograph of a sample of Ballagan...
    • P1030968
    • Photograph of a sample of Ballagan...
    • P1030969
    • Photograph of a sample of Ballagan...
    • P1030970
    • Photograph of a sample of Ballagan...
    • P1030971
    • Photograph of a sample of Ballagan...
    • P1030972
    • Photograph of a sample of Ballagan...
    • P1030973
    • Photograph of a sample of Ballagan...
    • P1030974
    • Photograph of a sample of Ballagan...
    • P1030975
    • Photograph of a sample of Ballagan...
    • P1030976
    • Photograph of a sample of Ballagan...
    • P1030977
    • Photograph of a sample of Ballagan...
    • P1030978
    • Photograph of a sample of Ballagan...
    • P1030979
    • Photograph of a sample of Ballagan...
    • P1030980
    • Photograph of a sample of Ballagan...
    • P1030981
    • Photograph of a sample of Ballagan...
    • P1030982
    • Photograph of a sample of Berriedale...
    • P1030983
    • Photograph of a sample of Berriedale...
    • P1030984
    • Photograph of a sample of Berriedale...
    • P1030985
    • Photograph of a sample of Berriedale...
    • P1030986
    • Photograph of a sample of Bearreraig...
    • P1030987
    • Photograph of a sample of Burghead...
    • P1030988
    • Photograph of a sample of Burghead...
    • P1030989
    • Photograph of a sample of Burghead...
    • P1030990
    • Photograph of a sample of Burghead...
    • P1030991
    • Photograph of a sample of Burghead...
    • P1030992
    • Photograph of a sample of Burghead...
    • P1030993
    • Photograph of a sample of Bressay...
    • P1030994
    • Photograph of a sample of Calders...
    • P1030995
    • Photograph of a sample of Calders...
    • P1030996
    • Photograph of a sample of Calders...
    • P1030997
    • Photograph of a sample of Calders...
    • P1030998
    • Photograph of a sample of Calders...
    • P1030999
    • Photograph of a sample of Calders...
    • P1031000
    • Photograph of a sample of Calders...
    • P1031001
    • Photograph of a sample of Calders...
    • P1031002
    • Photograph of a sample of Calders...
    • P1031003
    • Photograph of a sample of Calders...
    • P1031004
    • Photograph of a sample of Calders...