There are also menhirs, dolmens and cromlechs. Megalithic burials (dolmens) have also been found in large numbers in Daegu. Megalithic tombs and dolmens throughout Korea date to this time. The Badami region was settled in pre-historic times, with evidence by megalithic dolmens. The distribution of the dolmens would imply some relation to other global megalithic cultures. Also, there are about 150 dolmens in abundance, which is good for making dolmen. Many dolmens and rock tombs (especially passage graves) date from this period. This period saw the construction of many chambered tombs particularly dolmens or "cromlechs". Jersey was a centre of Neolithic activity, as demonstrated by the concentration of dolmens. Monolithic monuments like Dolmens and rock-cut caves can be seen in many parts of Ernakulam. The region is also a site for prehistoric dolmens and cave paintings. Fragments of burial urns are also available in the region near the dolmens. According to historians, the dolmens are burial sites. Some of the dolmens and cromlechs are burial sites serving also as border markers. One or more such dolmens are marked by a stone circle.