по Косинусоиде СВ стены
Mixed5Б2,265 m
Route Description: по Косинусоиде СВ стены
First ascent via the "Cosine Curve" route on the Northeast wall of Pik Zvezdny (2265 m), Ergaki mountain range, category 5B, winter 2015, by Zhigalov A.V. and Matyushin N.O.
Ascent Passport
- Region — Western Sayan, Ergaki Ridge, p. 6.2
- Summit — Zvezdny, 2265 m, via "Cosinusoid" on the NE wall
- Proposed — 5B category of difficulty — first ascent
- Route type — combined
- Route characteristics: height difference — 570 m, total route length — 1020 m, wall section length — 670 m, sections with 6th category of difficulty — 320 m, 5th category of difficulty — 90 m, average steepness of the entire route — 63.3°, wall section — 64.8°, 1st bastion — 51.5°, 2nd bastion — 72.2°.
- Equipment used on the route: anchor pitons — 107/85, 2 left on pendulum swings, 4 on rappels, camolots — 82/92, about 165 ITOS on "fifths", about 16 ITOS on skyhooks, 2 ITOS on bolt pitons, 7 bolt pitons hammered and left, 3 ears twisted, 4 ears left, on all stations for platform installation and one intermediate key section.
- Number of climbing hours — 37.5, days — 5. Descent 5.5 hours via Temerev I.'s route, 6A category of difficulty. Overnights — 4, all on the wall platform.
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