But the world-famous Blue Lagoon geothermal pool has closed for a week because of the current seismic activity around the site.

The site is part of southwest Iceland's Reykjanes Peninsula – a thick finger of land pointing west into the North Atlantic Ocean from capital Reykjavik. As well as the Blue Lagoon, the peninsula is also home to Iceland's main airport, Keflavik International.

Iceland is one of the most active volcanic areas on the planet. Rather than having a central volcano, the Reykjanes Peninsula is dominated by a rift valley, with lava fields and cones.

According to the Icelandic Met Office, around 1,400 earthquakes were measured in the 24 hours leading up to around midday on Thursday November 9, with another 800 in the first 14 hours of Friday. Seven of Thursday's were of a magnitude of four or above – and all of these were on the peninsula, between Eldvörp, near the airport, and Sýlingarfell, a mountain just to the east of the Blue Lagoon.