1. Climbing category: technical.
2. Climbing area: Southern spurs of the Alay mountain range, Kok-Su valley.
3. Peak Ossonaly, 4855 m, north face. (Peak height by altimeter 4807 m.)
4. Estimated difficulty category 5B.
5. Route characteristics: height difference — 1005 m (by altimeter); length of sections with 5th cat. diff. — 425 m; 6th cat. diff. — 105 m; average steepness — 65°.
6. Pitons driven for belaying: rock — 171; ice — 15.
7. Number of travel hours — 42.
8. Number of overnight stays and their characteristics: three overnight stays on artificial platforms laid on rock ledges; two overnight stays — for resting lying down, and one — for resting half-reclining.

Report

On the second ascent to the summit of Ossonali, 4855 m, category 5B, Alai ridge, Kok-Su gorge: by a team from the Odessa regional council of the "Avangard" sports society, as a duo. July 9-11, 1978 General view of the summit.

Map scheme of the Alai ridge (Kok-Su area)

Table of main route characteristics.

PASSPORT

Ascent to v.Yu.Ossonoli (4685 m)

1. Ascent class — technical.
2. Ascent area — Southern spurs of the Alay ridge, Kok-Su valley.
3. Peak "4685" — the proposed name is South Ossonoli.
4. Proposed difficulty category — 5B.
5. Route characteristics. Height difference 4685–3910 = 775 m. Length of sections 5B cat. difficulty — 300 m, 6 cat. difficulty — 100 m. Average steepness — 60°.
6. Rock hooks hammered for belay — 78, for creating I.T.O. — 4. Ice and bolt hooks were not used.
7. Number of travel hours — 18.5.