Famous 6km-cross-island (or cross-mountain) trek, preferably done with Pa´s Treks, which is something like an institution on Rarotonga. It takes approx. 3hrs and will take you from the North to the South. Rewards? Learning about the local Flora and Fauna as well as getting spoiled by beautiful nature and views from “The Needle” – a high pointy rock in the middle of the island.