Stopped at my son's Vineyard again yesterday. In the background is Mount Tapuaenuku (Tappy for "short") in its summer state of snow. Wikipedia describes it as:

Tapuae-o-Uenuku, formerly Mount Tapuaenuku, is the highest peak in the northeast of New Zealand's South Island. The name translates from Māori as "footprint of the rainbow", though is usually regarded as being named after Chief Tapuaenuku.[3]

At 2,885 metres (9,465 ft) it is the highest mountain in New Zealand outside the main ranges of the Southern Alps, and over 80 metres taller than the tallest peak on the North Island.

It dominates the Inland Kaikoura Range, rising high above the valleys of the Clarence and Awatere Rivers. It can be seen from as far away as Cape Terawhiti on the southwestern tip of the North Island, nearly 120 kilometres away, and is a prominent point on the horizon for travellers on the interisland ferries that ply Cook Strait.

The first European to sight the mountain was James Cook, who called it Mount Odin, but later nicknamed it "The Watcher" since his ship seemed to be visible from it at so many points along the coast.