By 3 News online staff
GNS Science says more “small-scale” eruptions are possible at Mt Tongariro, after the mountain erupted overnight for the first time in a century.
"I wouldn't be surprised if there are more small-scale hydrothermal-driven eruptions,” says Brad Scott, GNS Science volcano surveillance coordinator.
Mr Scott spoke at a press conference this morning, saying the overnight eruption caught scientists off-guard.
"We're not seeing more energy being released, and we didn't see a lot of energy being released before the eruption," he says.
Nick Peat, from the Department of Conservation, says huts and tracks in the national park will be closed for the next 24-37 hours.
Ski fields are not affected, and will operate as usual.
Watch the full press conference.
3 News