If anyone is interested in where the USGS Boundary is you can go to the boundary marker underneath a juniper tree just before the gate on the left-hand side of the road as you are going south away from the Bowen Ranch. I have seen this boundary marker myself a year ago, I will soon hike back up there to assure that it hasn't been dug up by land owners.
The only two boundary markers left that I know of is the one on the southwest corner and the other one in the center of the property. The other boundary markers are missing.
I have marked the boundaries on this aerial photo that can be obtained at
www.mapquest. com put in the address 6221 Bowen Ranch Road, Apple Valley, CA 92308, get the map and press aerial photo.
The aerial photo with the boundaries marked to the best of my ability:
http://www.deepcreekhotsprings.org/aerialphoto.html/