Hertfordshire Puddingstone, conglomerate of well rounded flint pebbles, embedded in a matrix of fine pale coloured sand
Hertfordshire Puddingstone, conglomerate of well rounded flint pebbles, embedded in a matrix of fine pale coloured sand, all bound together by hard natural silica cement, Hertfordshire, england
Size: 8688px × 5792px
Photo credit: © John Cancalosi / Alamy / Afripics
License: Licensed
Model Released: No
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