You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
Have the Vikings conquer the lowlands of asturias and force Asturias to ally with an ally/collaborator of Al-Andalus and have Al-Andalus annex the lowlands of Asturias, this scenario can screw the Kingdom of Asturias in the long term..