Donovan got it!  The pic is just before the final plunge into the Roaring River.  At first the trail is abused by ATVs but 1/2 way down it's almost abandoned. 

Too bad all the Abbot camps got trenched, lots of good trails.

What trail was 511?

It's the one detailed in the Clackamas Lake book.

When leaving Frazier Turn on the Serene Lake Trail there is a reroute in the first quarter mile and the 511 branches off while the trail tends to the left. Very faint. And the blazes in the Piss Fir heal over real subtle looking but you can get an eye for it.

I think Paul Turner chased it out once. Not sure.

Someone said for a trail built as fast as they did that it couldn't have had much in the way of tread work.

D

Oh, the one that supposedly runs up the south fork of roaring river?  I remember that one now.  Just forgot it was 511.  Here is the trip report from Paul and his adventure:

http://www.portlandhikers.org/forum/viewtopic.php?f=10&t=3242

Well documented with maps and his route.  Interesting read.

He has a nice picture of the subtle blazes. I think he drifted too low is why he didn't see the trail after a while.

The way to chase it down is with plenty of time and a little bit at a time.

I will never forget how a member here found a segment I had been looking for for hours by taking a leak behind a tree, lifting his eyes to find himself gazing directly at a blaze.

D.