Watch lava cascade from Icelandic volcano

The eruption occurred near Fagradalsfjall, a mountain on the Reykjanes Peninsula, around 30 km (19 miles) southwest of the capital.

Some four hours after the initial eruption at 2045 GMT - the first on the peninsula since the 12th century - lava covered about one square kilometre or nearly 200 football fields.

Eyewitness footage from YouTuber John Bear captured huge volumes of lava cascading down the mountain.

Bear said Friday was the last day the eruption site could be accessed for filming and the area is now blocked off by streams of cooled, black lava.