Hells Gate is New Zealand’s most active geothermal reserve featuring a 2.5km natural geothermal walk past violently boiling mud and exploding hot water pools, the largest hot waterfall in the Southern Hemisphere, land coral formations, a mud volcano and a medicine lake used by local Māori for healing for over 700 years. Traditional Miri Miri massage is offered at our Hells Gate Wai Ora Spa along with geothermal mud therapies.