If you travel down the North Island's west coast towards Wellington and look out over the ocean at Paraparaumu, you will see the peak of a mountain range created by earthquakes millions of years ago. The bulk of the mountains have subsequently submerged, but the crest of the range forms Kāpiti Island.
The island measures about 10km long and 2km wide, with wind-blasted hills on the west side of the island (that we can't see as we drive past) and the east side is covered with sheltered rain forests. Today it is a protected nature reserve, home to some of New Zealand's most endangered birds and an abundance of marine life.
Māori called the island Te Waewae Kāpiti o Tara raua ko Rangitāne which means the Meeting Place of the Boundaries of Tara and Rangitāne. In 1150, Whatonga divided the country, creating a boundary from the southern tip of Kāpiti stretching across the North Island. He gave the southern land to Tara and the northern land to Tautoki, whose heir was Rangitāne.
Before Europeans arrived in Aotearoa, Māori referred to the island as Motu Rongonui (famous island) and it was important due to its closeness to Te Moana-a-Raukawa Cook Strait. Whoever controlled the island controlled the strait, and control was fought over many times.