Wednesday, March 6, 2013
Shipwreck may contain near-mythical Viking navigation aid | The Raw Story
An oblong crystal found in the wreck of a 16th-century English warship is a sunstone, a near-mythical navigational aid said to have been used by Viking mariners, researchers said on Wednesday.
via www.rawstory.com
https://rightcoast.typepad.com/rightcoast/2013/03/shipwreck-may-contain-near-mythical-viking-navigation-aid-the-raw-story.html
