 It has once again come to be considered an important part of the island's culture and heritage, with efforts being made to preserve and promote it.Indo-European languages may have arrived in Ireland between 2,400 BC and 2,000 BC with the spread of the Bell Beaker culture when around 90% of the contemporary Neolithic population was replaced by lineages related to the Yamnaya culture from the Pontic steppe.The Beaker culture has been suggested as a candidate for an early Indo-European culture, specifically, as ancestral to proto-Celtic.