We went to Black Diamond Mines searching for the remains of a long dead coal mining industry and the mining towns that grew around it. At one point around 2000 miners (all the men of the town including boys 8 years and older) spent their days in tunnels under these hills. When the coal mining industry died (due to the low grade coal found) the families couldn't sell their houses because the company owned all the land so they packed up the entire house, structure and all and moved it. Mostly what is left is a graveyard and some tunnels that people like us can go poking around in, that is if we could find them.
I have now studied the map in detail and have realized our mistake. I place the blame squarely on the shoulders of the East Bay Regional Park District and their sorry cartography skills. Now, I am a woman possessed, I will see the Prospect Tunnel and "Jim's Place" for that matter. Black Diamond Mines we will conquer you!















