Passport
- Category — technical.
- Pamir-Alay, Turkestan Range, Ak-Suu valley.
- Peak 5229 (A. Blok) via North-West ridge.
- Petrichenko's 5B category route from 1984 is proposed.
- Height difference: 1020 m, length 1101 m.
- Length of 5th–6th category sections — 770 m.
Average steepness of the route — 66°, including:
- 6th category — 4500–4790 m — 85°
- 4790–5089 m — 74°
- Pitons driven:
- rock: 16 (7)
- bolt: 2 (2)
- chocks: 96 (24)
- ice: 14
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Team's travel time: 19 hours and 2 days.
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Overnights: 1 and 2 on ledges in a tent, lying down.
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Team leader: Safronov Andrey Vladimirovich — Candidate Master of Sports
Team members:
- Volkov Yuriy Evgenyevich — Candidate Master of Sports
- Kiskin Andrey Borisovich — Candidate Master of Sports
- Burundukov Vladislav Karlovich — Candidate Master of Sports
- Coach: Boula Viktor Sergeyevich — Candidate Master of Sports
- Approach to the route: July 19, 1988. Summit: July 20, 1988. Descent: July 21, 1988.
- Organization: Tyumen Regional Committee for Physical Education and Sports.

Photo #1
Legend
- ╒ – Team's route (Petrichenko route) – overnight stops
- Б – Bogomolov's route
- Е – Efimov's route
- Г – Ginzburg's route
All photos taken with "Smena 8M" camera.