Mysterious medieval stone disks unearthed in Ukraine were likely used by the Vikings as solar compasses to navigate the seas, a new study says. The eight unique discs, made from the easy-to-process ...

Mysterious medieval stone disks unearthed in Ukraine were likely used by the Vikings as solar compasses to navigate the seas, a new study says. The eight unique discs, made from the easy-to ...

Via Shutterstock) A new study suggests that medieval stone discs found in Ukraine were likely used by Vikings as solar compasses to navigate the seas. According to Discover Magazine, these discs ...