The written history and archaeological records of Central Scotland takes us back to Pictish times some 5,000 years ago. The geology of the area stretches back a further 400 million years.The oldest rocks are found near Lesmahagow and in the Pentland Hills. Known geologically as 'inliers'- small areas of rocks from an older age, surrounded by younger strata - these strata have yielded some of the oldest fish on earth and are highly prized for what...