Cowling Arboretum is contiguous with the Carleton College campus in Northfield, Minnesota. Once on campus the full color Arb map, available for purchase at the Carleton College Bookstore, can serve as your guide to the area. Or download and print a copy of the black and white version of the trail map. You can use a geo-referenced version of the Arb trail map with Avenza Maps, which is available for free. Download the free app from Avenza and the geo-referenced Arb trail map from our website. When you open the map using Avenza, you will see where you are on the Arb trails.