The Tongariro Alpine Crossing - active volcanoes, the Emerald and Blue Lakes, Mt Ngauruhoe and Red Crater

The line through Tongariro NP, New Zealand - waypoints, elevation and the day-by-day shape of the walk.
Nov-Apr (guided/winter gear otherwise)
Exposed alpine weather - sudden storms, wind, cold and snow possible; check the forecast and carry a PLB; the exposed crossing is regularly closed by wind/whiteout
Best Nov-Apr; a serious alpine route needing gear/guide in winter; weather window is critical. Confirm.
Volcanic desert, lava, the Red Crater climb, and the Emerald Lakes
Non-technical walking/hiking; confirm any exposed or scrambly sections locally
Marked/waymarked route; navigation generally straightforward - carry a map and confirm locally
Suitable for reasonably fit hikers; not wheelchair accessible - confirm specifics
Extremely popular - thousands on peak days
Add Mt Ngauruhoe? (now discouraged/culturally sensitive); Tongariro summit side trip
Mangatepopo to Ketetahi
Mandatory shuttle logistics (one-way); Mangatepopo start, Ketetahi finish
Day route - none needed
Day-hike kit, water, sun/rain protection, sturdy footwear; coverage varies
Services in National Park Village / Taupo; limited or none on the trail
Not required; self-guided
No permit, but a shuttle booking with a 4-hour parking limit at Mangatepopo manages the one-way flow. Confirm.
Permits and operators change - confirm before booking.
Volcanic terrain, sudden severe weather, the exposed Red Crater; active-volcano risk
Retrace the route to exit; dial local emergency services; carry a means of calling for help where remote
This profile is desk research, compiled from public sources - not a first-hand trail report. Coordinates are approximate.