The Sierra Azul Open Space Preserve is an amazing place. From up
here you can see the entire South Bay from Mountain View to Morgan
Hill.
The cache takes the place of "the end of the line", but is
somewhat beyond the end. :-) This is the road to Mt. Umunhum, with
the ex-Air Force station at the top.
There's a gate on the road which is as far as you're allowed to
drive - but you can hike in farther.
The cache is an easy to reach small with room for TBs and such.