Raoul island, 1000 kilometers north of New Zealand, erupted at 8.30am yesterday (17 March). The eruption threw up mud, rock and steam from a vent in the Green Lake area, part of one of the island’s two calderas. The New Zealand Herald has a great map and series of photos. Not so easy to find on most maps but here’s a Google Earth placemark.
A small eruption but it sadly it seems that one of the team of New Zealand conservationists working on the island is missing having gone to do a routine water temperature check just before the eruption. A rescue mission is being mounted.
The island’s last eruption was in November 1964. For geological background check out this overview or this great booklet.
Wikipedia already has a good description of the eruption – what an amazing site!