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Route 1: The right chimney. Bring a rope. Solo up to where the white part of the building starts. Easy but spooky. There's a great piece of protection, a metal bar connecting the white part of the building with the concrete under it, about 12" to the right of the chimney.
Head up the now narrower chimney, with a nice crack in the back. Laybacking is trickier, but much easier on the knees. The crack takes #1 and #2 Camalots, but the real bomber pieces are hexes where the crack widens at the horizontal ribs.
There's a similar climb around the front of the building. It is one story lower, the crack in the back is thinner (#2 Metolius), and it has a much larger bust factor.
Route 2: See: Featured Route. The arete. A recent addition to the building, the large air ducting pipes, offer points of protection for this climb. Solo up to left chimney. Sling the first bracket, and move right to the right rib. Sling the brackets.
Descent Go through the unlocked door, through the maintenance room and out. Roof access doors are almost always unlocked out to in, and locked in to out. Therefore, it's best not let the door shut behind you before you know there's a way out of the building.

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