We recently went up to BOR to figure out Lars's climb, Dirt Doctors from his old photo scans from the FA and were very entertained. This route was a fantastic moderate at 5.7 and we highly recommend it. Now the approach, that is another thing...but still worth it.
What we learned was that about 4 lines plus a variation start pass through the same area, each with a wide range of moderate climbing choices of high quality. Basically Dirt Doctors and Lone Pine Crack start on the same buttress left of the main arch of the East end and splinter off into four variations; Dirt Doctors Left (the original line), Dirt Doctors Direct (what we ended up unintentionally doing), Lone Pine Extended Finish that Dan M. and Bob S. did a while back, and finally the Lone Pine Crack Original Line.
The shared buttress start involves climbing a very attractive left-facing flake ending at an obvious tree perched above the arch. A beautiful pitch with perfect gear options at regular intervals. To the right of that is Close Shave, a mixed 5.9 pitch along the arete, also ending at the tree. That looked really cool but didn't get a chance to climb it.
All climbs funnel into a very wide "dish" with boulders strewn all around (beware of knocking anything off). From here we decided which path Dirt Doctors must have exited through the headwall, which is a wide corridor splitting the wall. We pretty much beelined straight up following a nice crack and blocky corners to the base of the headwall. After I got home, I realized from the old photos of the FA that Lars and Rainer took a path farther to the left. With our two choices this path was a little less logical to us but clearly would be nice climbing and would land you in the same spot as we did. At the base of the headwall is a sweet little ledge where one could escape out right if the chose to. The exit pitch was a highlight, I will leave it as "unexpected".
I could tell where Bob and Dan exited and it looked really wild. Once you stare at that headwall long enough you can see many ways to get through an otherwise incredibly steep wall.
We had a great time and look forward to more exploring of this wall.
The start of the climb(s)-
The pitch above the "bowl"-
The notch directly above is the fun exit pitch.