When Vadim Kolpakov went on an expedition to the north of Irkutsk region, he had no inkling of the sensational discovery he was about to make.
Church and human rights leaders in Siberia condemn 'abomination' and 'bestial' act.
Evidence of the dinosaurs found at Teete locality in Yakutia, just 450 km south of the Arctic Circle.
Sacred site up to 17,000 years old - believed to be gateway to the underworld - under threat from modern spray paint artists.
'The contract in current market parameters is absolutely unprecedented', Putin told investors at the annual Saint Petersburg International Economic Forum.