A good part of Dunedin Botanic Garden sits atop a long extinct volcano. The Garden is the best spot in the city to clearly see the three phases of the volcano. They show us a graphic picture of the violent changes that happened over millions of years. Pick up a trail guide from the information centre for a self-guided tour. Come prepared with some drinking water, warm clothing and or jacket and good comfortable footwear as this is a one hour walk up an extinct volcano.