INTRODUCTION
The last of the leaning Towers to be climbed (1973). Even so, it would seem that Hall and Wall might be the harder summits.
Leaning Towers, BC
ROUTE SUMMARY
Unclimbed Routes Climbing, Kletteren, Arampicata, Escalade, Leaning Towers, BC
Patrick Morrow and Chris Perry made the first ascent via the west face slabs: "no rope involved". It is likely that Slim Princess finishes on the same upper north ridge scrambling.

An easier route to get to from the tarn camp would be the overhung Enagonio-Mank on the southeast ridge - #3 & #4 sized 5.10 cracks, just right of the steepest part of the ridge. This first ascent of this route, by Bob Enagonio and Don Mank, was the second ascent of Block in 1988. They rappelled back to the Hall-Block col with four double rope rappels, the top rap being overhung!

1997, Gut Edwards and Sean Issac put up a difficult aid route on the east face called Trout Fishing in America, IV, 5.10+, A3. Fixed gear should help to find this route. The first six pitches are mostly aid. Pitch seven is the crux all free crack.

Mid July, 2015, Jasmin Caton and Kate Rutherford climbed "the smallest route in the cirque" - Slim Princess, 5.10, 250 meters. Overall, the route is five pitches followed by 100 meters of scrambling up the north ridge. The last pitch to the col was a crux with giant lichen petals blocking the feet on a reachy finger-lock roof. They rappelled their own route, no bolts.

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