Eldfell is a volcanic cone just over 200 metres high on the Icelandic island of Heimaey. It formed in a volcanic eruption, which began without warning on the eastern side of Heimaey, in the Westman Islands, on 23 January 1973. The name means Hill of Fire in Icelandic.
The eruption caused a major crisis for the island and led to its temporary evacuation. Volcanic ash fell over most of the island, destroying around 400 homes, and a lava flow threatened to close off the harbour, the island's main income source via its fishing fleet. An operation was mounted to cool the advancing lava flow by pumping sea water onto it, which was successful in preventing the loss of the harbour.
Wikipedia https://en.wikipedia.org/wiki/Eldfell
Address Iceland
Coordinates 63°25'56.36" N -20°14'50.218" E