|This article is about the Isu. You may be looking for Morrigan, the ship.|
|This article is a stub. You can help Assassin's Creed Wiki by expanding it.|
Within the Isu structure beneath Stonehenge, several steles engraved with mysterious quotes were discovered by the Viking shieldmaiden Eivor Varinsdottir as she recovered the Sword of Eden Excalibur during the 870s. Also in this time, Eivor obtained an Isu shield named after her.
By 2020, the modern day Assassins were able to decipher the script beneath Stonehenge through the efforts of the linguist Antony Henry, who had discovered a way to translate one of the Isu dialects into English. With this knowledge, he translated the text and sent the information in a digital folder to Layla Hassan as she relived Eivor's genetic memories.