Hrafnabjörg
Hraunreipi við Skógarkot í Þingvallahrauni og Hrafnabjörg ber við himin.
Hike in Þingvellir national park. The lava in foreground is helluhraun (pahoehoe) with hraunreipi. They typically form during effusive eruptions of fluid lava with little or no fountaining activity. As the lava flows, its surface cools and solidifies into a relatively thin, viscous crust that continues to move over the still-molten material beneath. During this motion, the crust becomes wrinkled and folded due to cooling from the atmosphere and the movement of the lava below. These wrinkles and folds give the surface a rope-like appearance and are collectively known as lava ropes (pahoehoe ropes).
Hrafnabjörg
Hraunreipi við Skógarkot í Þingvallahrauni og Hrafnabjörg ber við himin.
Hike in Þingvellir national park. The lava in foreground is helluhraun (pahoehoe) with hraunreipi. They typically form during effusive eruptions of fluid lava with little or no fountaining activity. As the lava flows, its surface cools and solidifies into a relatively thin, viscous crust that continues to move over the still-molten material beneath. During this motion, the crust becomes wrinkled and folded due to cooling from the atmosphere and the movement of the lava below. These wrinkles and folds give the surface a rope-like appearance and are collectively known as lava ropes (pahoehoe ropes).