Overview
The Four Faces of Hemdall is an unmarked secondary quest in The Witcher 3: Wild Hunt, set at a shrine northwest of Trottheim on Faroe in the Skellige Isles.
What happens
A group of pirates is blocking the shrine and refuses to let a pilgrim through unless he pays. Geralt can pay the toll himself, or threaten the pirates and fight them. If he killed Hammond in Following the Thread, the pirates recognize him and attack on sight.
Either way the pilgrim thanks Geralt and, if asked, tells him about Hemdall, the Skellige god whose shrine this is.