6b geologists travelled to Anglesey, Wales, to unravel the complex geological evolution of the British Isles. 

These ancient rocks were deposited 850 million years ago until the most recent glacial period 2.6 million years ago. A highlight was finding evidence for a ‘snowball earth’ around 650 million years ago.

The pupils also visited the Parys Mountain, a copper mine, seeing evidence of Britain’s climate change history, from an arid climate 400 million years ago through changing sea levels to ice ages; and an ancient, fossilized, submerged birch forest on Treaddur Bay.