Time:one day
Difficulty:6c (crux), 10 pitches all at least 6a, limestone slab climbing
People:one or two
Access point:  Jaun, Switzerland
Online:topo on camptocamp
The Gastlosen is a small mountain strip in the pre-alps in the western part of Switzerland. It offers any sort of difficulty for limestone climbing. The rock is usually of very good quality.
The route Elsa could be classified as plaisir climbing, offering 10 sustained and beautiful pitches with difficulties ranging from 6a to 6c (a few moves).