Hiking up spur #3 I found at the end another donkey location, then what was a skid road heading up the canyon. Here's two photos looking down where the skid road had been:



The fire burned out the logs that had comprised the "road"

Further up the canyon were more donkey locations and then this:



It's a bridge for the skid road. The fire damaged it, but it still mostly stands almost 100 years later. It may be the only bridge surviving from the MSP logging days...

Below the bridge was an old shovel buried in the stream bed:


To be continued...