One of the most popular national parks in summer, Yellowstone National Park is virtually undiscovered at other times. In winter, the park is quiet and impressive. With geysers ringed by frost-laden trees and wildlife basking in thermal-pool steam, Yellowstone is an unmatched wonderland, enjoyed best from cross-country skis. This guide takes you on more than 200 miles of ski trails in and near the park, highlighting scenery, wildlife, trail grooming and levels of difficulty. Detailed maps and trail descriptions help every skier-beginner to expert-enjoy the beauty and solitude of Yellowstone country!