That's the back end of Cygnus, disappearing behind the tree (facing right), and Vega at the top of the tree. Big Bear had more light pollution than I was expecting, but still, this trailhead on the north side of the lake was pretty dark.
It took a bit of post-processing to get anything out of this picture -- the original unretouched version is here. I still haven't learned to use NeatImage, or it would look nicer. Fuji F10, ISO 400, 15 second exposure.