The large radio tower cube at the top of Mount Umunhum is visible from San Jose and surrounding areas. The idea of this route is to run from the Bay (Alviso Marina County Park) to the top of the mountain. The destination should be visible for much of the way.
It's a surprisingly straightforward route description: Guadalupe River Trail bike path, a couple of streets over to Meridian Ave, then a long way south on Meridian to the Mine Hill trailhead (Almaden Quicksilver park). Take trails all the way up to the top.
There is no water on the trails, so have a plan before heading up the hill.