Physics Block is a good quality boulder in a secluded area of Riggs' Hill. The landings are sloped but free from lots of rubble.

From the parking area at Escondido, follow the trail to the back side of Riggs' Hill. The boulder will be 25 feet to the right of the trail (moving up the hill).

The route location on map application is approximate. If you have more info on its location, contact me, and I will update the area.