Kirkjugólfið (The Church Floor) is in the field just east of Kirkjubæjarklaustur. It's an approx. 80 m² expanse of columnar basalt, eroded and shaped by glaciers and waves. There has never been a church there but the plane looks as though it's man made. Columnar basalt is formed when lava flow gets cooled and contraction forces b

uild up. Cracks then form horizontally and the extensive fracture network that develops results in the six sided formation of the columns. Kirkjugólf is a protected natural
monument.

source : http://www.klaustur.is/Ferdathjonusta/English/Interesting_places/Kirkjugolf