Icelandic Caves & Geothermal Wonders
Southern Iceland’s geothermal landscape features the Great Geysir and the reliable Strokkur geyser, which erupts every few minutes. This selection includes the Reykjadalur valley, where a warm river allows for natural bathing, and the silica-rich, turquoise waters of the Blesi hot spring. Subterranean highlights range from the 9,000-year-old Gjábakkahellir lava tube to the man-made Laugarvatnshellir, inhabited by families until 1921. The list also covers the distinct basalt column caves found along the black sand beaches near Vík.
A Geysir
Historic geothermal geyser known for its eruptions and geothermal activity within a notable hot springs area.
B Strokkur
Active geyser erupting every 5 to 15 minutes with water fountains reaching up to 40 meters high. Located within a geothermal area, it is known for frequent and reliable eruptions.
C Reykjadalur
A hiking area featuring natural hot baths in a scenic valley north of Hveragerði.
D Rútshellir Cave
Listed in Natural Heritage Register, Rútshellir Cave is one of the first man-made caves in Iceland.
E Reynisfjara Columnes
Basalt column cave located on the Reynisfjara black sand beach. The geometric pillars were formed by the rapid cooling of volcanic lava.
F Laugarvatnshellir
Known as the "Cave People's Cave," these man-made dwellings were inhabited by Icelandic families as recently as 1921.
G Hálsanefshellir
A natural sea cave set within a wall of geometric basalt columns on the Reynisfjara black sand beach.
H Blesi
Geothermal feature consisting of two pools. The upper pool is clear and boiling, while the lower pool is an opaque, vivid blue due to dissolved silica.
Gjábakkahellir cave
A 364-meter-long lava tube formed 9,000 years ago. It is an open-ended cave featuring various stalactites and lava formations.
J Tintron
A rare lava chimney and spatter cone located in the Gjábakkahraun lava field, formed by gas escaping through molten lava.
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