Helgafell is an inactive 227 metre high volcanic

Volcano

2. Bedrock3. Conduit 4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank| 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15...

 cone located on the island of Heimaey

Heimaey

Heimaey , literally Home Island, is an Icelandic island. At a size of 13.4 km² , it is the largest island in the Vestmannaeyjar archipelago, and the largest and most populated Icelandic island outside the main island of Iceland. Heimaey lies approximately 4 nautical miles off the south coast...

 in the Vestmannaeyjar archipelago

Archipelago

An archipelago , sometimes called an island group, is a chain or cluster of islands. The word archipelago is derived from the Greek ἄρχι- – arkhi- and πέλαγος – pélagos through the Italian arcipelago...

 in Iceland

Iceland

Iceland , described as the Republic of Iceland, is a Nordic and European island country in the North Atlantic Ocean, on the Mid-Atlantic Ridge. Iceland also refers to the main island of the country, which contains almost all the population and almost all the land area. The country has a population...

.

The Stórhöfði peninsula immediately to the south of Helgafell in what is now southern Heimaey formed about 6000 years ago, with Helgafell forming from a secondary eruption a thousand years later. Immediately north of Helgafell is the active volcano Eldfell

Eldfell

Eldfell is a composite volcanic cone just over high on the Icelandic island of Heimaey. It formed in a volcanic eruption which began without warning just outside the town of Heimaey on 23 January 1973. Its name means Mountain of Fire in Icelandic....

, which last erupted January 23, 1973.

Helgafell is a dormant cone volcano.