An official Path Through History Site! Natural Stone Bridge and Caves Park is a natural wonder of the Adirondacks and the largest marble cave entrance in the east and is still being carved by the Trout River. Visitors can enjoy waterfalls, a gorge, and option descents into lighted caves. Guided adventure tours in July and August include a "cave float", gemstone mining, and more. The attraction has been family-owned for more than 200 years. Tour options vary from self-guided above-ground tours to spelunking cave crawls (July and August) to snowshoeing (winter). Kid-friendly activities include bouldering walls, disc golf, and a DinoDig.