Just to the left of Japanese Gardens is this obvious line of hand cracks and traversing roofs. Start on the ledges above the big stump on the trail and lieback a wide flare for about 10 feet to a short finger crack. Move right into a sweet steep handcrack, up into a wide (6"?) crack that traverses left. Clip the fixed chock before the traverse, and walk a # 5 Camalot to the end if you want to protect this section, or drag will become an issue. At the end of the traverse there is a set of anchors. Skip this and get into the chimney above it. Walk your #5 up this section again until the chimney narrows and you step out onto the face to commit to the perfect handcrack above. You'll hit the "ringing flake" here. Spooky. The handcrack cruises through it to the anchor up above (from which you can TR Iron Horse, too). A 5.11 variation goes through the roof above this anchor.
Several hand-size pieces (at least double #2 Camalots and maybe double #3s to sew it), a few smaller cams, and a healthy selection of large cams. A #5, while not necessary, would ease the mind a bit.
Ryan on the upper handcrack of Sagitarius.
Mid-pitch (photo taken on rappel).
Just after the traverse under the roof flake part.
A fellow climber aptly described this amazing route as "a voyage." It takes you through so many big, improbable features that by the time you reach the final stretch of steep handcrack, you'll feel as though it was twice as long. Shorter folk will get an extra thrill on the traverse under the roof, as you may not reach the undercling to use for balance.
It is also possible to leave a #4 camalot midway through the main traverse and run the rope /outside/ of the chimney (attached by long sling). If done right this can result in very little rope drag--gear inside chimney then becomes the rope drag concern; use more long slings for any gear placed inside the chimney, and/or wait until you step back out of it to place more gear.