We went for a walk around the lake today. On previous occasions we've noticed evidence of beaver activity, but nothing prepared us for what we were about to encounter:

As we got closer, we could see that the beavers had been very busy and quite ambitious: they had successfully felled several trees with trunks nearly a foot in diameter, and were well on their way on a few others:

One of the trees seemed like it should have already fallen over; only a slender twig remained holding up a twenty foot high tree:

No doubt the beavers will return tonight, and we'll be awakened by an almighty crash as they finally bring it down and drag it to the water.
Tomorrow I will go look, and if I'm lucky I'll have The Mother Of All Beaver Logs to put on
my piano.