[adapteva]

Weird title, makes it seem like a reveleation. There have been numerous Viking treasures discovered in Sweden with traces from the the Islamic world and it's well known that they were all over England as well.

https://en.wikipedia.org/wiki/Spillings_Hoard

[kelipso]

There was even a movie with Antonio Banderas about it! (The 13th Warrior)

[create-username]

In the TV series Vikings they reach the Muslim kingdoms of the Iberian Peninsula

[jnurmine]

There is an interesting book about Viking trade connections, "River Kings" by Cat Jarman.