The Map to Nikulausson's Tomb is a map detailing the secret location of Bishop Gottskalk Nikulausson's tomb.
The powerful spellbook known as the Rauoskinna was buried with its writer Bishop Nikulausson in a secret tomb to prevent abuse of it. A map of the tomb's location and a key to the tomb were hidden around the planet and moved every so often. As a further precaution, they were given supernatural safeguards. At some point, the map was hidden in a cave in Japan's Aokigahara Forest and guarded by a ghost. In the present, the map was found by Kylie Griffin and the Chicago Ghostbusters. Kylie found the map in a small chest in the cave but the ghost possessed their guide. It ordered them to leave the map or die. Kylie threw the map onto Rookie's Proton Stream and it disintegrated. The ghost gave them permission to leave but refused to leave the guide's body. Kylie opened a Trap and captured the ghost. 36 hours later, Kylie used her photographic memory to recreate the map with a fuchsia crayon.
- Ongoing Series
- What Came Before! Page (2016). IDW Comics- "Ghostbusters International #10" (2016) (Comic What Came Before! page). Narrator says: "The Ghostbusters - with the aid from an alternate dimension Egon Spengler, as well as the Chicago branch - have tracked down the map to and the key of the hidden tomb of Icelandic Bishop Gottskalk Nikulausson, a man who wrote a spellbook rumored capable of controlling the devil."