Olangchung Gola–Tipta La corridorओलाङचुङगोला–टिप्ताला

The easternmost of Nepal's great salt corridors ran up the Tamor river through Taplejung to Tipta La (also called Tiptala Bhanjyang or the Walung Chung Pass), and its master traders were the Walung of Olangchung Gola — a village at about 3,119 m whose very name means “market” (gola), with a folk etymology in which a wolf (olang) showed a trader (chun) the way to Tibet. Positioned in the triangle where Nepal, Tibet and Sikkim meet, Walung was the trade hub for Yangma, Ghunsa, Khangbachey, Lungthung and Lelep — important enough, by Wikipedia-cited local history, to host treaty diplomacy with Sikkim in 1775 in the presence of Tibetan representatives, and prosperous enough to build the Deki Chholing Gompa, one of eastern Nepal's great Nyingma monasteries, locally dated to around 450 years old.

Its traders ran a classic relay economy during the salt-economy heyday of roughly 1850–1959: salt and wool from the plateau came over Tipta La on yaks from the counterpart town of Riwu; at Maiwakhola the salt passed to Limbu intermediaries who relayed it toward Dharan, with grain, cloth and ironware flowing back up. The eastern trade had an extra dimension — proximity to the Sikkim passes and, later, to Darjeeling and Kalimpong meant Walung houses also plugged into the British-Indian wool economy. The post-1959 collapse hit Walung harder than almost anywhere: with no through-trade, no road and fields too high for surplus grain, the village simply emptied. Its trading families re-established themselves in Taplejung bazaar, Dhankuta, Kathmandu and Darjeeling, and the census population nearly halved, from 422 in 1991 to 239 in 2011.

The 21st century has brought an ironic reversal of direction: it was China that built a road to its side of Tipta La in late 2016 and whose crews cut the first dirt track down to Olangchung Gola in June 2017, while Nepal's own 85 km Phungling–Olangchung Gola–Tiptala road achieved breakthrough at Tiptala Bhanjyang only on 20 February 2024 — six years' work and Rs 440 million by contractor SBA Elite JV, giving Koshi Province its first road link to China. Planners bill the 300 km Rani–Tiptala corridor as a future India–China trade artery; for now, the crossing handles modest local trade as a trade-only point with vehicle movement since January 2025, and Walung's revival hangs on whether the new road brings commerce or merely accelerates out-migration.