It's an Anglesey TV Sixty Second Geology Lesson – The Oldest Rocks in Wales 🪨⏳ Anglesey isn’t just about stunning beaches and castles—it’s a geologist’s dream. The island is home to some of the oldest and most unique rocks in the UK, dating back over 600 million years. 🌍 Pre-Cambrian Beginnings Anglesey’s foundations were laid in the Precambrian era, when volcanoes and deep-sea sediments formed the bedrock. You can see some of these ancient rocks at Ynys Lawd, South Stack, where twisted folds