Krafla is a volcano in the north of Iceland.
It is a caldera.
It is about 10 kilometers (6.2 miles) in diameter.
The fissure zone is 90 kilometers (56 miles) long.

Krafla's  highest peak is 818 meters (2,684 ft) high.

Krafla includes the crater Víti, one of two well-known craters by this name in Iceland (the other is in Askja).
The Icelandic word "víti" means "hell".
In former times, people often believed hell to be under volcanoes.
Víti has a green lake inside of it.
Krafla is a volcano in the north of Iceland. It is a caldera. It is about 10 kilometers (6.2 miles) in diameter. The fissure zone is 90 kilometers (56 miles) long.
Krafla's  highest peak is 818 meters (2,684 ft) high.
Krafla includes the crater Víti, one of two well-known craters by this name in Iceland (the other is in Askja). The Icelandic word "víti" means "hell". In former times, people often believed hell to be under volcanoes. Víti has a green lake inside of it.
Krafla