Lost Valley has a couple trees down. The parts crossing the trails are mostly smaller and possibly could be completed with a hand saw. Smaller chain saw would make quick work of the issues.
First tree is right by the small waterfall and doesn't appear to have caused any trail damage.
The second tree is near to the end of the double track/newer rock garden trail sections. The tread looks fine under this one as well.
There are a few wash outs due to the recent rains (one large hole on the double track, and some rocks churned up throughout the trail.) Be careful if you're riding out there at night. Nature is updating the technical rating to fun.