tongariro lakes, new zealand

active ash blue camping climb cold crater crossing earthquake edge emerald eruption fog freeze freezing glacial great green height highlands hike hiker hiking ice island lake landscape lava ledge mist mountain mountaineering national nature new north outdoor outdoors park pass path pathway peak ridge rocks route scenery scenic season seismic snow sulfur tongariro tourism tourist track trail tramping travel traveling traverse trek trekker trekking trip turquoise vacation valley view volcanic volcano walk walks water wilderness winter zealand