American climber Tommy Caldwell is currently on El Capitan in Yosemite, attempting his long-term project that links the aid routes of Mescalito and New Dawn Wall. When completed the route will be one of, if not the, hardest big wall free climb in the world.
Caldwell is currently on the wall and is documenting his efforts on his Facebook Page
As this route free climbs Mescalito and New Dawn, I'd imagine there's a fair bit of tat already insitu. One thing that has struck me having watched Tom Evans's El Cap Report over the last few months, is the amount of fixed stuff on El Cap. Looks like Raven Tor in its aid era. Bit bigger though, obviously, and made of rock.
Another interesting aspect was that I read that in between attempts, aid climbers had managed to break a hold, obviously changing the moves a bit. So what happens if he manages to free the entire route? Aid climbers will still climb Mescalito and New Dawn, and will inevitably change the route from time to time. Have a look at Mark Hudon's trip report on The Shield to see the damage that has been done to that route. Pegged out cracks that started as Rurp cracks, that are << worse than Serenity Crack >>. One wonders if this route may be a temporary affair...?