Volcanic boulders and Mount Ngauruhoe with a cap of winter snow, Tongariro Northern Circuit, Tongariro National Park

Mount Ngauruhoe with winter snow, Tongariro National Park

Historic Old Waihohunu Hut, Tongariro National Park, Tongariro Northern Circuit Great Walk

Dawn vista of Mount Ruapehu and the Tama Lakes from the summit of Mount Ngaruhoe, Tongariro National Park

Cathedral Rocks, Te Heu Heu and Tukino, Mount Ruapehu, Tongariro National Park

Boardwalk enters Whakapapaiti Valley, Mount Ruapehu, Tongariro National Park, Central North Island

Mountain Cabbage Tree/Cordyline indivisa. Tongariro National Park

Emerald Lakes, Tongariro Alpine Crossing, Tongariro National Park

Red Crater and Mount Ngauruhoe. Tongariro Alpine Crossing, Tongariro National Park, Central North Island

Boardwalk enters Whakapapaiti Valley, Mount Ruapehu, Tongariro National Park, Central North Island

Volcanic boulders and Mount Ngauruhoe, Tongariro Northern Circuit. Tongariro National Park

Mount Ngauruhoe and Upper Tama Lake at sunrise. Tongariro National Park

Winter sunrise, Mount Ruapehu from the summit of Ngauruhoe, Tongariro National Park

Mount Ruapehu and Tama Lakes from summit of Mount Ngaruhoe, Tongariro National Park

Winter evening light on Mounts Ngauruhoe and Tongariro. Lower Tama Lake in foreground. Tongariro National Park, New Zealand

Boardwalk enters Whakapapaiti Valley, Mount Ruapehu, Tongariro National Park, Central North Island

Overlooking Mount Ruapehu and the Lower Tama Lake. Tongariro National Park, UNESCO World Heritage Area. New Zealand

Lava formations on Mount Tongariro with Ngauruhoe in background. Tongariro Alpine Crossing, Tongariro National Park, Central North Island

Tongariro Alpine Crossing route crosses lava flows beneath Ngauruhoe and Pukekaikiore, Mangatepopo Valley, Tongariro National Park, Central North Island

Snow tussock in Whakapapaiti Valley on slopes of Mount Ruapehu, Tongariro National Park, Central North Island

Mount Ngauruhoe in early morning light, Tongariro Northern Circuit, Tongariro National Park

Mount Ruapehu and Lower Tama Lake from Upper Tama Lake overlook. Tongariro National Park

Mount Ruapehu and tussocks, Rangipo Desert (Te Onetapu), Tongariro National Park

Tawhai Falls, Wairere Stream. Tongariro National Park. Central North Island

Mangahuia Stream, Tongariro National Park

Mountain cabbage tree, Tongariro National Park

Mount Ruapehu and Lower Tama Lake. Tongariro National Park

Blue Lake and lava flows. Tongariro Alpine Crossing, Tongariro National Park, Central North Island

Mount Ngauruhoe and South Crater. Tongariro Alpine Crossing, Tongariro National Park, Central North Island

Lichen covered tramping track marker post, Mount Ruapehu, Tongariro National Park, Central North Island

Mount Ngauruhoe in early morning light, Tongariro Northern Circuit, Tongariro National Park

Mount Ruapehu and Lower Tama Lake at sunset. Tongariro National Park,

Mount Ruapehu and hebe during a frosty winter morning, Rangipo Desert (Te Onetapu), Tongariro National Park

Mount Ruapehu summit plateau and Crater Lake in morning light during winter from Tahurangi, Ruapehu's highest peak. Tongariro National Park

Snow tussock in Whakapapaiti Valley on slopes of Mount Ruapehu, Tongariro National Park, Central North Island

Tongariro National Park

Crater Lake & summit plateau, Mount Ruapehu, Tongariro National Park

Blue Lake and dracophyllum, Tongariro Alpine Crossing, Tongariro National Park

Tongariro Alpine Crossing route, Mangatepopo Valley, Tongariro National Park, Central North Island

Boardwalk enters Whakapapaiti Valley on slopes of Mount Ruapehu, Tongariro National Park, Central North Island

Volcanic boulders and Mount Ngauruhoe, Tongariro Northern Circuit. Tongariro National Park

A tramper views Mount Ruapehu from above Tama Lakes, Tongariro National Park

Early morning light on Waihohunu Ridge, Mount Ruapehu. Tongariro National Park

Predawn vista of Mount Ruapehu and the Tama Lakes from the summit of Mount Ngaruhoe. Tongariro National Park

Snow tussock in Whakapapaiti Valley on slopes of Mount Ruapehu, Tongariro National Park, Central North Island

Sunrise over the Rangipo Desert/Te Onetapu, Mount Ruapehu. Tongaririo National Park, New Zealand

Rime ice, crater rim of Mount Ruapehu, Tongariro National Park

Tongariro Alpine Crossing and Mount Ngauruhoe. Tongariro National Park, Central North Island

Scattered walkers cross South Crater on Tongariro Alpine Crossing, Tongariro National Park, Central North Island

Emerald Lakes, Tongariro Alpine Crossing, Tongariro National Park