Step off the ferry and into a landscape unlike anywhere else in Auckland, New Zealand's youngest and largest shield volcano, formed by eruptions just 600 years ago. Lace up your walking shoes and take on the Rangitoto Summit Track, a 2.3km trail winding through stark volcanic lava fields and pockets of native forest. Along the way, detour into the fascinating lava caves, tucked around 200 metres below the summit, before continuing your climb to the top. From the summit, you're rewarded with sweeping panoramic views across the Hauraki Gulf, its scattered islands and the Auckland skyline. Allow 2 to 3 hours for the return walk, and keep an eye out for native wildlife thriving in this pest-free sanctuary. Pack water, snacks and sun protection, there are no cafes or shops on the island, so it's just you, the lava rock underfoot and one of the best views in the Gulf.