I might do this every weekend. Although the Fastback would suffer.
So i took my parents down to the mining area and we walked around and i took some better pictures of things. On the way back up the road i wanted to stop at this one place i've seen everytime i drive down. So we stop there and it turns out its the bottom of the huge hydromining. What i was seeing was the drainage ditches that bring all the water into another huge shaft and under the road and out the otherside somewhere.
Then my parents and i went to the old mining towns cementary and the poor miners only got some welded train track as a cross but some of the rich ones got head stones.
Heres the pics

This is the shaft under the bridge on the downstream side

This is the bridge that washed away, you can see it in the water.

This is the shaft on the upstream side, its the side we first discovered

This is why they call it Steep Hallow Creek

Heres the sleuthbox that washed down stream and rested next to the shaft

This is wear the bridge would have crossed

This is what the land looks like after Hydromining in the Late 1800s
If you can imagine a mountain right in the middle of that then you'll know how the land looked like before. What they did was dig a drift mine into the mountain with several shafts going in different directions and then they filled each shaft with tons of TNT and blew the entire mountain up and then used the big water cannons to wash the dirt and rock down into their sleuthboxes to collect the gold.