Some of these formations are complicated structures that belong to the old bedrock wich formed while now extinct and disected volcano system located around Kollafjörður.
Sumar myndanirnar eru flóknar upphleðslur sem tilheyra gamla berggrunninum sem myndaðist fyrir tilstilli fornra megineldstöðva sem staðsettar voru fyrir mynni Kollafjarðar.