It was first discovered and excavated by the Danish archaeological team in 1957 .
A burial site containing 50 cairns , found in northwest Qatar in Umm Al Maa and Lisha , dates back to the Iron Age .
Qatar was first discovered and excavated by the Danish archaeological team in 1957 .
A burial site containing 50 cairns , found in northwest Qatar in Umm Al Maa and Lisha , dates back to the Iron Age .