From your description of the map the torch projected onto the wall, Geirfast thinks the secret chamber must lie somewhere within Nud-melek, perhaps in the southern part of the Second Hall.
Starts at: Geirfast (NPC)
Objectives:
Objective 1.
The entrance lies somewhere in Nud-melek, sou
th-east of the Twenty-first Hall, perhaps the Second Hall.Geirfast has asked you to find the entrance to the secret chamber depicted in the shadow-map. (read less)
Step 1.
Discover the entrance to the secret chamber
Objective 2.
Geirfast is at the Twenty-first Hall, north-w