In 1998 the Dolgans led Buigues to an almost perfectly preserved mammoth. The following year, Buigues organised an expedition to dig the mammoth out of the ground and take it to a special laboratory to be studied. The biggest challenge was to remove the mammoth from the ice so that it could be moved./it took six weeks to dig around the mammoth to cut out a 20-tonne block of ice.At the end of October a helicopter arrived and carried the 320 kilometres to the laboratory.Because of this expedition,the world will have a greater understanding of these animals.