The remains of the supposed compass known as the Uunartoq disc were found in Greenland in 1948 in an 11th-century convent. Though some researchers originally argued it was simply a decorative ...

Forget GPS: Medieval Compass Guided Vikings After Sunset. ... The remains of the supposed compass — known as the Uunartoq disc— were found in Greenland in 1948 in an 11th-century convent.