What this solves
Most trekkers do fine on the upper inner kora and assume Kashe is "more of the same". It isn't. Kashe drops 600 m of elevation in 4 km of trail — half of which is steep rocky descent and unmaintained path with seasonal creek crossings. The score combines month, water level, visibility, and party size into one number you can compare against your group's experience.
Score your Kashe day
How to read the score
0–25 — Easy — Like a steep but well-marked hill. Trekkers with any experience will manage. Poles strongly recommended for the rocky descent.
25–50 — Moderate — Real mountain terrain. Slow is fast. Plan on 4 hours for the descent, not 2.
50–75 — Hard — Multi-hazard day. Solo is dangerous. Pair at minimum. Reconsider if you have any AMS or knee history.
75–100 — Expert only — Wait a day. Conditions will improve or you won't. If you must descend, hire a local guide at the trailhead — they know the safe line past the wet slabs.
Reference: my June 2023 Kashe descent scored 68 (high water + active rain) and took 6.5 hours for a fit pair. The September 2024 descent scored 22 and took 3 hours.
Limitations
FAQ
A: Not for September at low water. For July-August at high water, yes — the alternative is solo + expensive if you slip. Park office rents local herders-as-guides at the trailhead for ¥300-500/day.
A: Generally no. December-March the valley floor snow accumulates and the rocky descent is unrecognisable under rime. Most parties end the inner kora at Tanggu La and return via Chonggu in winter.
A: In July-August at lower Kashe (below 4,200 m) yes. They are not dangerous but they are relentless. Long socks, DEET, and accepting you'll have a few. They don't transmit disease in this region.
A: Yes — about 4 km down the valley there's a faint track on the east side that climbs 200 m to a yak trail and exits to the Daocheng-Yading park road. Local guides know it. Solo trekkers should not attempt — it's unmarked and easy to lose.