Franklin is a coal mining ghost town in the Green River Gorge.
This ride takes you to a unique bridge over the gorge, down to the river, up to the ghost town, and over a mine.
The old bridge (above) and the new bridge under construction in 1915 (right), rebuilt in 1995 as a one-way stoplight bridge (below).  All were preceded by a log bridge, cable and basket, and a single log.
The first 100 feet or so are on private property, but the Washington State Parks has an unmarked easement, so you can proceed to the gate.  Franklin is part of an undeveloped state park.
The trail to the ghost town is the old road up from the river.
You can ride right up to an old vertical mine.  The Black Diamond Historical Society said it is permitted (and safe) to walk on the wire grate covering the shaft.
The hole is 1350 feet deep, 700 feet below sea level at the bottom.
Exposed coal seams are visible along the trail,
along with several abandoned mines.  Most are sealed, but others are often discovered.  It is advisable to remain on the trail.
A steep side trail takes you down into the Green River Gorge.
Finally you reach the river,
and the rapids.
Then you have to climb back out.