Hundreds of stone pillars have been found in the Keo Seima Wildlife Sanctuary in Sen Monorom commune, O’Raing district, Mondulkiri province, and authorities said they were formed by volcanic lava millions of years ago.
Hundreds of stone pillars have been found in the Keo Seima Wildlife Sanctuary in Sen Monorom commune, O’Raing district, Mondulkiri province, and authorities said they were formed by volcanic lava millions of years ago.