Volcanologist David M Pyle Professor of Earth Sciences at University of Oxford speaking on stage at Hay Festival 2017 Hay-on-Wye Powys Wales UK

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Size: 2832px × 4256px
Location: Hay Festival 2017 Hay-on-Wye Powys Wales UK
Photo credit: © Jeff Morgan 04 / Alamy / Afripics
License: Licensed
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