Its name comes from the massive see-through rock feature on the third pitch — visible from a great distance and instantly recognizable. The rock is solid, the belays are well-equipped, and the climb is short, with quick and easy return options. It’s no surprise this is considered one of the classic lines.
Geo
- Crag:
- Facing: West
- Base Altitude: 2650m.
- Rock Type: Limestone
- Rock quality: Moderate
Difficulties
- Route type: Trad, Multi pitch
- Vertical height: 135m.
Info
- First ascents:
- First ascent: uknown
- Route Characteristics: Dihedral, Ramp, Traverse
- Approach: From the refuge, it takes about 10 minutes to reach Portes, and from there the base of the route is just a few meters away.
- Descent: From the ridge, you can return either by:
A. Continuing along the combs of the ridge (approx. 100 m, grade II–III) up to the summit, and descending via the normal route.B. Rappelling down the east face (two rappels). ⚠️ Caution: After the second rappel, if using 50-meter ropes, an additional 15 meters of downclimbing at grade III is required.
- Walking from parking/camp: 0'
Gear
- Fixed gear: Old pitons
- Belays: Yes
- Suggested Gear:
- Nuts
- Slings



