25 Apr 2025
Brian John is a geologist, geomorphologist, and writer known for his advocacy of the glacial transport theory regarding Stonehenge’s bluestones. Born in Wales, he studied at Oxford University, earning degrees in geography and later specialising in glacial and Quaternary geomorphology. His research focuses on Ice Age processes and their impact on landscapes. John has published extensively on geomorphology, including the theory that glaciers, not humans, transported the bluestones from the Preseli Hills to Salisbury Plain. He is also a prolific author of scientific and popular works, including books on Welsh landscapes, archaeology, and environmental science.
Did you know?
Rhosygilwen events can be combined with pre-show dining in the orangery and complimented with an overnight stay in the courtyard.
Getting Here
Events take place at our unique Rhosygilwen venue.
Rhosygilwen, Cilgerran, Pembrokeshire SA43 2TW
We have ample parking onsite next to the Oak Hall but encourage our guest to car share where possible
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