Dollan, Arnarseturshraun

Background

History & Background

The history of Dollan is primarily geological, dating back to the formation of the Arnarseturshraun lava field itself. Lava fields like this, characteristic of the Reykjanes Peninsula, are the result of countless volcanic eruptions over millennia. Dollan is specifically a lava tube, formed when a stream of molten lava develops a solid crust, beneath which the liquid lava continues to flow, eventually draining away and leaving a hollow tunnel. The Reykjanes Peninsula is part of the Mid-Atlantic Ridge, where the North American and Eurasian tectonic plates pull apart, leading to intense volcanic activity. The lava flows that created Arnarseturshraun and its lava tubes are remnants of these powerful geological processes. While specific human historical events directly linked to Dollan may be scarce, its significance lies in its role as a natural archive, preserving the story of Iceland's fiery birth and ongoing geological evolution. It serves as a stark reminder of the raw, untamed forces that continue to shape this remarkable island.

Dollan is one of several lava caves and tubes in Arnarseturshraun, the rugged lava field north of Grindavík. The opening is close to the old road area near Arnarsetur and provides a visible example of the hollow lava-tube systems hidden beneath the surface. Descriptions from local cave exploration records indicate that Dollan extends only a few tens of metres and that safe entry requires care. It is not a staffed or developed cave attraction. Anyone considering entering should use proper cave equipment, avoid going alone and never rely on improvised access. For most visitors, viewing the opening and the surrounding Arnarsetur lava landscape is the safer option.