Beaver Dens ID: 3301 | This file appears in: Beaver Marsh Beavers built a series of dams to allow underwater entry to their dens. This strategy helps beavers gather supplies and food without setting foot on land where dangerous predators live. The deeper pools of water created by this system of beaver dams helped restore water levels to the marsh. | Creator: Jack Rigby | Source: National Park Service Download Original File CreatorJack RigbySourceNational Park Service "Beaver Dens" appears in: Beaver Marsh