Unearthing a nearly 40-Million-Year-Old World | Đi tìm thế giới 40 triệu năm tuổi

Na Dương is recognized by scientists as a unique \"window\" into the Eocene and Oligocene epochs. Geological research and mining activities have uncovered numerous plant fossils dating back approximately 40 million years, highlighting the area's significant geological value. Researchers conduct field explorations in the mines to search for further fossil evidence within the sediment.