I grew up near Curtner and Almaden Expressway, right up against a group of hills historically known as the San Juan Bautista Hills, now more generally referred to as Communications Hill. The hills are the home to "The Church on the Hill," Santa Clara County Communications, and Oak Hill Cemetery. Although I was aware that old mines existed in the hills, I didn't get around to actually exploring them until fifteen years ago. I was able to take and gather a number of photos of the mines and took some video of a smaller mine before they were all permanently sealed. Video of the smaller mine appears below.