Explore Maines Most Scenic Overlooks and Trails Aroostook County Aroostook Valley TrailPresque Isle and New Sweden, ME A 28.8-mile trail that is part of the Interconnected Trail System, and allows for ATVs, horseback riding, mountain biking, snowmobiling, walking, and cross country skiing. Deboullie Mountain Aroostook County (Click on the “Directions” tab to find this.) Deboullie