Face on the left has a couple of bolted routes on ...
This north - south running clandestine corridor, filled with huge nolina plants, is formed by Roundup Rock on the east and a nameless crag on the west. The nameless crag is east of Thrutcher Dome. Large boulders on the south and north ends obfuscate the view into the corridor. There are several excellent crack climbs that make the circuitous approach into the corridor worth the time involved.
This area is also described as the Snake Pit (pg. 307) in Randy's '92 guidebook.
One approach is to enter the aptly named Prickly Pear Canyon flanked by Thrutcher Dome on the east and the nameless crag on the west. Walk a few hundred feet north towards the base of a cactus covered hill. At the base of the hill are some large boulders on your left and a very narrow chimney / corridor on your right that leads into Butler Corridor.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Butler Corridor:
Climb a flake/corner to a horizontal. Head left on the horizontal, then move up to reach the lower left end of a right diagonalling crack. Tricky moves up and right on this crack lead to a parallel right leaning crack. This thin hands crack is reminiscent of The Secret of Mother Butler aka Appetite for Destruction (but burlier) and is followed to the top. It is perhaps 3 of 5 stars and easily as good as the two adjacent climbs.Rap off the anchor above The Viper....[more]Browse More Classics in CA
The approach given for Butler Corridor above is not the best alternative (meaning you really don't want to go that way).
If you are trying to reach routes in the main Corridor (ie: Secret of Mother Butler, Viper, etc.), it is best to continue east in the wash past the Red Obelisk until you can see the southern side of the Corridor (Eiffel Tower and Kokopelli Wall) continue east until you can head well around the eastern side of these formations and then back west and up to the northern side. Enter through the northern side of the Corridor.
For approaching Eiffel Tower, The best approach for the Eiffel Tower is to hike to the base of the southern entrance to Butler Corridor.
To reach the southern end of Butler Corridor, from the vicinity of the Red Obelisk, continue east for 25 yards. Now either: (1) Turn left and take Prickly Pear Canyon north for about 20 yards, until you can cut right (east) over fairly level ground until you drop into a wash emanating from the Butler Corridor; or (2) Continue east from the Red Obelisk in the main wash for another 100+ yards, and until you can circle around low rocks on your left and reach the southern entrance from the southeast.
Once below the southern entrance to the Butler Corridor, there is much vegetation and cacti. Stay to the far right of the gully, and scramble up boulders, staying on the right until you are just in the Butler Corridor. Once in the corridor, head left up to the base of the Eiffel Tower.