Between the two twin lakes above Mammoth there is a bridge which goes over to a campground. You can walk out over the bridge or drive it. On this morning I chose to walk it. The bridge was covered with frost. This was about October 6 this year. I had just heard a pack of coyotes not far from the bridge, but fishermen were out & about, as well as the campers. It was a lovely, crisp, clear morning!