OK, this is a pretty local loop. But the pics are on my hard drive, it's raining, and I'm waiting for laundry to dry, so here it is.
If you make a triangle between Hwy 80, Hwy 20, and Hwy 49 between Auburn and Nevada City there is some interesting forest territory with remains of hydraulic mining that I've been waiting to explore. Last Sat. it had been dry for a while so I figured the roads would be accessible. The two southern entries are from Secret Town and Dutch Flat along 80, so I decided to go north by Foresthill and Yankee Jim's road which dumps out near Colfax.
Confluence of North and Middle fork, flow pretty mild
Remains of hydraulic mining near Yankee Jim's, behind treeline
Heading down Yankee Jim's road
The turnoff to Shirttail Canyon road, really pretty road along a river up a canyon, leads to Iowa Hill
I didn't take any pics of the bridge, this one is from a couple of years ago