Southern Peninsula

Roughly halfway. It sits in the lava field between Reykjavík and Keflavík, which is why so many people book it for the morning they fly out or the afternoon they land. Luggage storage is available on site.

Usually yes, but the answer changes. The eruptions near Grindavík since 2021 have closed roads and sites at short notice, sometimes for weeks. Check safetravel.is on the day rather than trusting anything written in advance — including this.

Half a day covers the peninsula loop at a reasonable pace. A full day if you are adding the Blue Lagoon, which most people do.

Gunnuhver's steam vents, the Brimketill lava rock pool, the Bridge Between Continents over the rift, the lighthouse and bird cliffs at Reykjanesviti, and Kleifarvatn, the lake that drained through its own floor after the 2000 earthquakes.

No. Everything on the standard peninsula loop is paved and open year-round.

From the air, reliably — helicopter tours fly the eruption sites when conditions allow. On foot, only when the authorities have opened a viewing route, which depends entirely on what the ground is doing that month.