Kolsai Lake-3 (Upper)

Overview

The Kolsai Lake 3 trek reaches Kolsai-3 (Upper Kolsai) at 2,850 m in the Kungey-Alatau — the smallest and most remote of the three Kolsai lakes. 456 m long, 310 m wide, and up to 80 m deep - a surface area of just 0.2 km². The basin formed in the same late-Pleistocene tectonic event that shaped the lower lakes, filled by glacial meltwater from the surrounding cirque. A day at the lake is one of the headline Almaty lakes stops and a peak of Kazakhstan nature on any itinerary. It is widely listed among the top things to do in Almaty for travelers planning a Kazakhstan tour, and most multi-day routes from Almaty include it.

Water holds at 6–8 °C through summer; by mid-November the lake freezes edge to edge. Above the treeline, the slopes give way to alpine meadows, scree, and patches of permanent snow on the north-facing aspects. The valley above the lake narrows into a morainic corridor with rocky outcrops and the last scattered Tien Shan spruces.

Ten kilometres beyond the upper lake, the Sary-Bulak Pass (3,278 m) crosses into Kyrgyzstan - historically a livestock route used by Kazakh shepherds moving herds between summer pastures. The whole zone sits inside a controlled border area; you need an original passport and your route registered with the park.

Kolsai-3 draws a very specific crowd. Serious trekkers and mountain guides from Almaty come for the silence; horse caravans from Saty move slow groups up over 2–3 days; the occasional Bishkek-based hiker traverses the pass in late August before snow returns. You almost never see day-trippers - the math doesn't work for a single day.

The lake reads brutally different by season. Late June to mid-September is the operating window: wildflowers in the meadows below 2,500 m, blue water, stable weather. October brings the first overnight frosts and ice on the shoreline. November–May the trail is buried under snow and the pass is closed to civilians. August offers the warmest air at the lake (still rarely above 12 °C); the lower meadow half a kilometre below the lake holds edelweiss until early September.

A detail most maps miss: Kazakh shepherds historically called this stretch kyrgyz-asu (the Kyrgyz crossing), and the trail you're walking has been in continuous use for at least 200 years. The wooden bridges and stone windbreaks along the route weren't built by tourism - they were built by horsemen moving livestock to jaylau (summer pastures) and back.

Practical Info

Kolsai-3 requires a 2–3 day commitment minimum. The trail starts at Kolsai-1, climbs 8 km to Kolsai-2 (3–4 hours), continues another 6 km to Kolsai-3 (2–3 hours) - 14 km total one way with about 1,000 m of cumulative elevation gain.

Lake GPS: 42.6750°N, 78.4400°E.

Standard format: day 1, drive Almaty → Saty → hike to Kolsai-2, camp; day 2, hike to Kolsai-3 and back to Kolsai-2 camp; day 3, descend to Kolsai-1 and drive back to Almaty. Strong groups compress this to 2 days; groups stretching to Sary-Bulak Pass need 4–5 days.

⚠️ Border zone permit: the original passport is mandatory and checked at the Kolsay-Kolderi visitor center on entry. For travelers planning to continue to the Sary-Bulak Pass or cross into Kyrgyzstan, a separate border-zone registration is required - Treeple arranges this in advance with the regional border service.

Park entry fee: around 900–1,500 KZT per pedestrian (linked to the MRP), included in the Kolsai trail ticket. Cash in tenge recommended.

Camping: required overnight at either Kolsai-2 (designated meadow) or Kolsai-3 (informal sites on the northern bank, no facilities). Open fires prohibited above the treeline; bring a gas stove and a sleeping bag rated to –5 °C for July, –10 °C for early September.

Guide strongly recommended. The route is technical in two spots: a scree slope below Kolsai-2 and a stream crossing above Kolsai-2 that swells with afternoon snowmelt. A satellite-comms device is essential - no mobile signal above Kolsai-1.

Horseback option: Saty horsemen run loaded pack-horse trips for multi-day groups; some travelers hike with daypacks while gear and food ride up separately. Treeple arranges this for groups of 3+.

No facilities at Kolsai-3 - no toilet, no cell signal, no water source within 1 km of the lake (carry 3+ L for the upper section). Pack out everything you bring in.

Combine With

Kolsai-3 is the trek for travelers who already plan to spend 7+ days east of Almaty. A typical 5-day program runs Almaty → Charyn → Saty → Kolsai-1 → camp at Kolsai-2 → day hike to Kolsai-3 → descend → Kaindy → Almaty. Strong groups compress to 4 days by skipping Charyn.

Cross-border traverse: experienced trekkers continue from Kolsai-3 over the Sary-Bulak Pass (3,278 m) into Kyrgyzstan, descending to Karakol on Issyk-Kul. This is a 7–10 day expedition with advance border permits, a Kazakh guide handing off to a Kyrgyz guide at the pass, and pre-booked transport on the Kyrgyz side. Treeple coordinates with partner operators in Karakol for the second half.

Less ambitious extensions add the Assy Plateau (2,500 m, observatory) before Kolsai, or the Charyn Ash Grove as a recovery day after the trek. The most-photographed loop pairs Kolsai-3's alpine wilderness with the contrast of Altyn-Emel's desert (Singing Dune, Aktau Mountains) for a 9–11 day program covering both ends of Almaty Region's ecology.

City-add-ons either bookend the trek: Almaty's Kok-Tobe and Green Bazaar for the first arrival day, Medeu and Shymbulak for a recovery half-day after the descent.

Kolsai-3 closes the Almaty lakes high-altitude loop for trekkers carrying overnight gear.

Tips

Treat Kolsai-3 as an expedition, not a hike. Get the gear right or stop at Kolsai-2.

Pack list non-negotiables: 3-season tent rated to –10 °C, sleeping bag for –5 to –10 °C, gas stove and 2–3 canisters, water filter or purification tablets, headlamp with spare batteries, first-aid kit, trekking poles, waterproof hiking boots already broken-in.

Weather window: late June through mid-September. Earlier than late June, the pass holds snow and the bridges may wash out from snowmelt. After mid-September, overnight temperatures at the lake drop below freezing and the trail to Sary-Bulak Pass closes for civilians.

Altitude pacing: Kolsai-3 sits at 2,850 m; some travelers feel mild altitude effects (headache, slow appetite) overnight. The cure is descent - if symptoms worsen, drop back to Kolsai-2 (2,252 m) immediately. Treeple's guides watch for AMS signs throughout the trek.

Water above Kolsai-2: stream sources between Kolsai-2 and Kolsai-3 are reliable in June–July but unreliable by September. Filter or purify everything. The upper lake itself is too cold and turbid for drinking without treatment.

Photo time: golden hour at Kolsai-3 lasts about 25 minutes either side of sunrise and sunset because the surrounding ridges cut off direct light fast. The mirror-still water of the lake at first light is the classic shot - most photographers hike up the evening before specifically for the dawn light.

Insurance: mountain travel insurance with helicopter evacuation coverage is strongly recommended. Treeple includes basic emergency evacuation in multi-day packages; extended cover is an add-on.