Mar. 9 Ski trails remain closed and unfortunately parts of the fat bike trail are no longer rideable. However, if you are itching to get out parts of the ski trails may be accessible for fat tire biking. Hiking is available on most trails, visit the Nature Center for more information as conditions change. Nature Center Building Hours: Wed - Fri 10 a.m. - 5 p.m. Closed Monday - Tuesday. Trails open daily.