In the land of Efra-Hvol you can find three man-made caves collectively called Efra-Hvolshellar, which translates as Upper-Hvol Caves. They are dug into a rather coarse breccia that most likely originated from tillite deposits. The lower part is more fine grained showing a combination of horizontal, cross-bedded and prograding strata. There are three Upper Hvol Caves, two of which are joined together where the third considered to be the 2nd longest man-made cave in Iceland, measuring some 45 metres in length. However, because a section of the roof collapsed about 100 years ago, one can only go a third of the way into the cave. The Upper-Hvol Caves are a protected natural site.
A small creek flows in front of the Efra-Hvolshellar caves area
Translate
