The route is pitted with the diggings from the 1850's and onward. This is a shaft to a mine that some miner dug back in the 1800's. The canyon was quite active in the 1850's and the second largest gold nugget ever found was dug up close to here. It weighed 54 pounds.
The miners in the 1850's had a mining camp where the path ends. These rocks were stacked by them back then.