** watch future Linda Hall Library lectures live at new.livestream.com/lindahall ** November 12, 2019, at Johnson County Community College Presented by Bill Shefchik, geologist (retired), Burns & McDonnell Engineering Company in Kansas City, Missouri This second session covers the history of the middle two billion years in Northern Scotland, including the deductions based upon the scientific principles and techniques presented in the first Deep Dive. It shows that Scotland once hosted a part of one of the tallest mountain ranges in the world. And it shows how we know how tall they were, based on data available in present-day rocks.