One of New Zealand's 9 Great Walking Roads (Thegreatwalk), active volcanic landforms, very characteristic, beautiful scenery, rainforest, waterfall, meadow, lake, barren ridge, crater... The whole journey is 3 days, about 50 kilometers, and the trail is well renovated. The trail is free, but the accommodation is fixed. To book and pay, the government provides accommodation with cabins and tent camps (with tents). There are no selling points along the way, so you can eat and drink yourself. You can also only go 1/3, and the scenery is of course less.