volcano slope

active ascend ash blue canyon cliff climb climbing crater crossing danger earthquake edge eruption extreme gorge great height high highlands hike hiker hiking island landscape lava ledge mountain mountaineering national nature new ngauruhoe north outdoor outdoors park pass path pathway peak red ridge rocks route ruapehu scenery scenic seismic sky slope smooth snow sport sulfur summit sunny tongariro top tourism track trail tramping travel traveling traverse trek trekker trekking trip vacation valley view volcanic volcano walk walks wilderness zealand