beaver ponds beaver dams felling trees to build dams felling trees to build dams Look at that dammed river Beaver dam 850 meters long beaver dams According to the leading authority Wikipedia - Beaver dam felling trees to build dams the entrance remains under water 850 meters long felling trees to build dams 850 meters long felling trees to build dams felling trees to build dams 850 meters long the entrance remains under water felling trees to build dams beaver dam beaver dams felling trees to build dams the entrance remains under water Beaver dam felling trees to build dams beaver ponds 850 meters long felling trees to build dams 850 meters long beaver dams English Beaver dam felling trees to build dams felling trees to build dams the entrance remains under water the entrance remains under water the entrance remains under water felling trees to build dams