Welcome to Kempville, as this area was once known. This old mining trestle has always been one of my favorite locations in the park and I've been meaning to place a cache here for ages.
This is intended as an easy find, just off-trail. No need to go down the steep slope that is nearby.
Poison oak is plentiful(!) in this park, including this area but there was none near the cache. In season, take the appropriate precautions against ticks and snakes. Coyotes, bobcats and mountain lions also live in the park. Oh, and you obviously shouldn't go climbing around the trestle and related buildings.
I averaged coords for a long time (almost 600 readings) but still wound up with a lousy 16' EPE for some reason.