Sources

• Distances, the line of the road and fuel pumps: © OpenStreetMap contributors, Open Database Licence. Routes worked out with the Open Source Routing Machine.
• Heights: NASA Shuttle Radar Topography Mission, public domain, served by Open Topo Data.
• Traffic diversion announced due to landslides on NH-29

  ipr.nagaland.gov.in · Official page · dated 14 September 2025

• How to Get to Longwa in Nagaland

  beyondwildplaces.com · Published guide · dated 5 December 2021

• Nagaland Inner Line Permit: frequently asked questions

  ilp.nagaland.gov.in · Official page

• Online Inner Line Permit (ILP)

  ditc.nagaland.gov.in · Official page · seen in search results only

• Foreigners now require special permission to visit Manipur, Nagaland, and Mizoram

  eastmojo.com · News report · dated 19 December 2024

• Mizoram Tourism: entry formalities

  mizoramtourism.com · Official page

• Dzukou valley now opens for visitors after weeks of closure

  easternmirrornagaland.com · News report · dated 15 July 2021

• Over 30 trekkers evacuated as wildfire breaks out in Nagaland's Dzukou Valley

  nenews.in · News report · dated 28 January 2026

• Landslides block NH-29: police issue advisory on alternate routes

  ipr.nagaland.gov.in · Official page · dated 4 September 2024

• HP locator: LB Service Station, Mengujuma

  petrolpump.hpretail.in · Official page

• IndianOil locator: Northern Highway Gas Station, Meriema

  locator.iocl.com · Official page

• HP locator: Ahile Service Station, Kohima Mokokchung Road

  petrolpump.hpretail.in · Official page

• IndianOil locator: A S Enterprise, Village Chiechama

  locator.iocl.com · Official page

• IndianOil locator: Marcofed Tseminyu, Ghathashi

  locator.iocl.com · Official page

• IndianOil locator: Holojwi Memorial Delivery Station, Ghathashi

  locator.iocl.com · Official page

• IndianOil locator: Marcofed Mongsenyimti, Ungar

  locator.iocl.com · Official page

• IndianOil locator: Changtongya Filling Station, Changtongya

  locator.iocl.com · Official page

• HP locator: TIR Service Station, Changtongya

  petrolpump.hpretail.in · Official page

• IndianOil locator: Shamakok Fuel Station, Longleng

  locator.iocl.com · Official page

• IndianOil locator: Leinak Pump Agency, Hukpang

  locator.iocl.com · Official page

• IndianOil locator: E Pangkum Konyak Fuel Station, Nganching

  locator.iocl.com · Official page

• IndianOil locator: Wangbo & Sons Filling Station, Papong

  locator.iocl.com · Official page

• IndianOil locator: Nagaland Auto Fuel Center, Chui

  locator.iocl.com · Official page

• IndianOil locator: Marcofed Mon, Tongho

  locator.iocl.com · Official page

• IndianOil locator: Yewang Filling Station, Chui

  locator.iocl.com · Official page

• IndianOil locator: Wangnao Fuel Station, Chui

  locator.iocl.com · Official page

A gap is not a fact. It means we looked and found no source.

• The date of 1 January 2025 for fully online permits comes from a search result; the state page returned a certificate error.
• The official permit questions page does not say whether Dimapur is covered or where permits are checked.
• How the state's foreign tourist permit fits with the Protected Area Permit re-imposed in December 2024 was not found on an official page.
• No order of the Ministry of Home Affairs on the Protected Area Permit was opened; the rule rests on a news report and Mizoram's tourism site.
• Reopening date of Dzukou Valley after the January 2026 fire seen only in a search snippet (19 February 2026) and not recorded.
• A claim that a registered guide is compulsory for Dzukou since October 2025 appeared only in a search snippet.
• Dzukou entry fee amounts come from news and an operator, not an official page, and are left out.
• No source found on whether a motorcycle can be ridden from Viswema to the trailhead.
• Highest point on the route and highway numbers beyond Kohima not sourced.
• The Nagaland tourism site timed out and the Kohima district site shows no Dzukou or road notices.
• Road condition north of Mokokchung rests on one 2021 blog; no recent source found.
• Videos not collected.