I live just north of Truckee. One day my GF had to go do some surveying over towards Nevada City. The easy way would have been out to 80, down to NC, and survey. Probably 2-2.5 hours of driving. I had the day free and said, "hey, lets try the back way -- via Downieville, Forest, Alleghany, etc. She said sure. That didn't work out so well.

Everything was going great, narrow roads crossing part of the Yuba River, gorgeous country, tight switchbacks and dangerous drops. Ended up on Foote Crossing Road, crossed the Yuba, climbed up a ways on a road maybe 2-3 wider than my Tacoma. Come around a corner, a chunk of slate had slid down covering the road days before. The options were backup 2+ miles or try and move the rock. Having a tow rope, we tried to move the large rock -- it moved, just not enough. After about 2.5 hours, a group came from the other direction and helped us out.

You have to be careful when out there. Before I do something like that again, despite thinking I was prepared, I'll do a bit more research and probably add a high lift jack and some other toys.