Dyrhólaey
Two neighboring natural arches under a narrow promontory in the sea. Nearby are also basalt stacks that are up to 66 m tall.
Dimmuborgir kirkja
Natural arch – a section of lava tube in an unusual lava field. In Dimmuborgir are found also numerous chimneys of lava, where one can enter.
Arnarstapi
A group of sea arches and other rocks with amazing shapes.
Jökulsárgljúfur
Canyon of Jökulsá river below Dettifoss. This magnificent canyon is 25 km long, up to 500 m wide and up to 120 m deep.
Eldgjá canyon
Spectacular canyon, up to 270 m deep and 600 m wide with the Ófærufoss waterfall falling in it. This is the largest volcanic canyon in the world.
Ásbyrgi
Unique canyon. When looking from the air, it reminds a tongue with approximately 100 m tall, vertical walls. In the middle of this tongue has remained a long, 25 m tall, narrow cliff named Eyjan. Ásbyrgi most likely has been formed by glacial flooding.
Námafjall Geothermal Area
Large, colorful geothermal field with boiling mud pots, solfataras, sulfur deposits. Once important mine of sulfur for medieval Europe.
Grjótagjá
Small lava cave with thermal spring and hot lake inside. Earlier the lucid water in the cave was suitable for bathing but in 1975 – 1984 the temperature of water in it exceeded 50° C.
Viti crater lake
Explosion crater at the summit of Askja volcano, filled with light blue, opaque geothermal lake. Lake water is warm and rich with carbon dioxide.
Surtsey
This volcanic island is very new: it rose from the ocean in 1963 – 1967. The island is pristine and serves as a natural laboratory where the colonization process of plant and animal life is researched. The area of the island is decreasing.