This could be the act of rebellious mammals or a secret mission sponsored by the CIA. A colony of beavers destroyed a busy road in Russia. The road collapsed because the beavers had blocked a pipe under the road while building a dam.
Here's a quote from the ITAR-TASS to boost your beaver education: "Young individuals build dams and settle in new places," biologist Pavel Kosintsev said. "There's only one way to protect communications from these animals - put iron bars over the pipes."
Your move, Russia. The beaver war is on.