Aeyo Valley & Aeyo Lake

Walk an ancient hunters' trail through moss-draped, lichen-hung forest that feels almost prehistoric, until it opens onto turquoise glacial lakes cradled by mountains — a stone's throw from the Chinese frontier.

Aeyo Valley is one of India's last untouched trekking frontiers, tucked deep in the Dibang Valley district of Arunachal Pradesh near the India–China border. Only recently opened to travellers, the Aeyo Valley trek follows old-growth forest and a web of intertwining rivers, past cascading waterfalls and log-bridge crossings, before climbing to its prize — the brilliant blue Aeyo Lake, a glacial lake in the Eastern Himalayas and the birthplace of the Aeyo River. Setting out from Anini, the base town, you camp beneath towering peaks in near-total silence, guided by the Idu Mishmi tribe whose hunting trails these once were. Among offbeat treks in Arunachal Pradesh, few feel this raw, this remote, this alive.

Best time to visit
The Aeyo Valley best time to visit is the drier months of April to June and September to November, when trails are safest and the high altitude lakes at their most vivid.

Traveller tip
On how to reach Aeyo Valley — fly into Dibrugarh (Mohanbari) in Assam, drive to Anini via Mayodia Pass and Etalin, then continue to Bruint, the last road head where the trek begins. This is a serious multi-day expedition, so build in acclimatisation days and secure your Inner Line Permit well ahead. Plan permits and travel details via the official Arunachal Tourism portal.

Ready for the full Aeyo Valley trek itinerary and Dibang Valley trekking logistics? It's all easily arranged within BreakBag Holidays' customised Offbeat Arunachal Pradesh tour packages.