Green dolerite erratic carried on Irish Sea Glacier from Preseli to Mumbles c 19000 years ago. Stone such as this was used to construct Stonehenge.

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Previously unrecorded I photographed this boulder in early 2022 . Hailed by Brian as the 'greatest glacial discovery this century its location is highly significant for the origins of the Stonehenge bluestones.

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Size: 6264px × 3904px
Location: Mumbles, Gower, Swansea, Wales, UK
Photo credit: © phil holden / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: boulder, bristol, channel, coast, coastline, discovery, dolerite, erosion, erratic, feldspar, finds, geology, geomorphology, glacial, glaciation, glacier, gower, green, ice, icebergs, intertidal, irish, level, magnatite, moraine, mumbles, news, petrology, preseli, rock, sea, shore, shoreline, south, stonehenge, transport, wales, welsh