The hills just west of Washington street (~Trader Joes area) contain a few climbs for those willing to explore. Most of the rock is choss, with deadly landings, but a few decent climb exist. Keeping a low profile is probably a good idea, as well as trying not to knock loose any rocks that could tumble down towards houses and scare someone.

The field south of the St. Francis of Assisi seems to be open for walking across, with lots of parking on the east side of Washington street. If you know a resident in the area a lot of the private property backs up to the hills as well.