If you would like to witness the impressive ability of beavers to structure a forest community, take a hike at Wolf Lake State Forest. There is a very significant beaver dam that has been there for years. As you hike, you approach from below the dam, walking across the dam outlet and slowing going up hill until first your eyes are level with the water and then you find yourself standing on the shore of the beaver pond. Very impressive (not to mention beautiful) spot.