Thin Slice is one of the best 5.10a trad climbs at the City.  It is found on the north east side of Parking Lot rock, just east of Cario (5.11a).

The climb starts in a right facing dihedral, and follows a juggy crack with good gear.  A small bulge is pulled and the crux finger crack is just above.  Figure out the tricky moves along a finger crack and you will arrive at a ledge with 2 bolts.  An extra finger sized cam (#1 friend) will be helpful in the upper finger crack.

Thin Slice

Cairo

Inspiration or Perspiration

Bombs Over Tripoli

A long and varied route! Boyle certainly had an eye for the odd! Or was it just that the obvious plums had already been plucked? Powerful and tricky moves down low on a grainy and lichen covered slab give way to a taxing undercling sequence about a third of the way up. A short section of tricky face climbing with great patina crimps set you up on a long gritty, lichen covered slab with spaced out bolts (supplemental gear- see protection section). Finally, above the slab you get to the goods- overhanging granite huecos! Underclings, slopers, delicate stems and sneaky crack climbing skills are needed for this enduro finale. A very airy and pumpy finish! 12a power down low, and 12b endurance at the top. Many bolts are poorly placed in difficult to clip locations... as far as I can tell this is the timestamp of the early Boyle routes.

On the north end of the east face, scramble up a gully to a short overhaning arete.  Climb this technical and pumpy climb bouncing to the left side and back to the right near the top.  If you stay right, it requires tough moves, calves of steel, and a right hand that has had the sweat glands removed.  It also has less exposure.

First climbed by Dave Bingham in 1984 with only three bolts!!  The route was retro-bolted in 1988.  Begin by climbing a large juniper then stepping on to a thin technical face.  Make a difficult move to a layback (crux) which gains a very thin insecure crack.

Description

Protection

Routes in Parking Lot Rock - Northeast