UMBAGOG LAKE, NH Polly Mahoney leads her dogsledding clients, on teams of Yukon huskies, on a six mile mush around Umbagog Lake from a remote campsite where they spent the last night. Mahoosuc Guide Service offers a variety of dogsledding excursions, including weekend overnights, where novices can learn the basics of mushing and experience the winter wilderness of the Maine New Hampshire border. Bob MacDonnell/The Hartford Courant