Along the south east coast of Iceland is a large pseudocrater field called Landbrot. This is where the lava flowed over the marshlands in the 1783 Laki volcano eruptions. Pseudocraters are formed by steam explosions as the lava flowed over the marshlands.
They were great to climb over and explore.
The Laki eruptions in 1783 were devastating. A set if fissures opened and over 135 craters erupted at various times over a period of 8 months. Over 80 billions tonnes of lava flowed from the craters. Many farms in the area were destroyed. The sun was blotted out because the amount of ash and sulphuric acid that exploded from the craters. Over 9,000 people were killed and over half of the cattle in Iceland died. The ash that blew east was to blame for many crop failures all over Europe.