A log of wood believed to be 50 million years old has been hauled up from below ground at Diavik diamond mine in the N.W.T. — a find that researchers say is remarkable but not uncommon… the mine described it as a 136-kilogram (300-pound) log from a redwood tree that it found 240 metres below ground. In an email, a Diavik spokesperson said it was discovered on Feb. 20 during regular mining at the A21 pit while miners were scooping kimberlite ore. The spokesperson said pieces of wood are regularly recovered from Diavik’s kimberlite pipes but this one is notable because of its size. Scientists know that 50 million years ago the region would have been a humid temperate forest ecosystem with metasequoia, hazel, chestnut and oak-like trees.”It would almost have looked like Nashville, Tennessee in a way, climate-wise.”