There was, Viking trickery. Lure explorers/settlers farther west. Same though as 'ICE'land. First time the Vikes told the truth was Vinland but likely by mistake.
this is interesting - the fake birth cert is being brought up again by tweeters like Rubini..
https://twitter.com/GregRubini/status/1164165284170588160
It was warmer then. Vikings were farming.