Hey Greg.....We came upon these last night too. They are a bit before the drop down to Dead Lake. As you can see they are quite large. (to big for our little saws) I would suggest letting the DNR get these. They are from a clump of 4 large trees, one of which fell earlier in the summer. The fourth one fell away from the trail. It must have been an impressive crash when they all hit the ground !
The trail is the thing, not the end of the trail. Travel too fast and you miss all you are traveling for.