Each of us lives at one point on the Earth, and it is important to know where—without reference to shopping malls or sports stadia. We all need to know where we live in relation to geological and biological phenomena. Dr. Keddy lives in the forest of Lanark County—half way between Adirondack Park in the US and Algonquin Park in Canada. The County is perched on the boundary of the Precambrian Canadian Shield (gneiss and marble) and Ordovician limestone from an ancient sea. In this film you will learn more about the County’s geology, wetlands and forests, human impacts on the landscape, and some special natural places to visit (fire barrens, hackberry forest, alluvial swamps, alvars). This presentation was given to the Ottawa Field Naturalists Club in Ottawa, Ontario, on 11 March 2014. Read more about Lanark County in Dr. Keddy’s natural history guide, Earth, Water, Fire: An Ecological Profile of Lanark County, available in bookstores listed at drpaulkeddy.com/teaching_lanark.html.