Dramatic aerial footage shows tourists hiking inside a volcano crater on New Zealand’s White Island just minutes before a violent eruption killed at least five people.

The image, shot by New Zealand’s Institute of Geological and Nuclear Sciences, was taken about five minutes before the volcano erupted at 2:15 p.m. local time.

A small group of people can be seen in the center of the photo hiking along a narrow path.

Authorities said there were about 50 people on the island at the time.

Twenty-three were rescued from the island, including some who were injured, but about 27 were still missing Monday afternoon, officials said.