The Phantom Skull Cave Poster was released by Egmont Publishing AB in Sweden in 2018. The poster is found within Fantomen comic book number 24, attached to the center as a free giveaway inclusion.
On the front cover of Fantomen comic book number 24, the reader is notified that a ‘Extra Poster!’ is included within the comic book. The front cover of this edition can be seen below.

The poster is printed in full color measuring 34cm x 26cm. It features an illustration of the Skull Cave in it’s jungle setting in the Deep Woods, with image of the various rooms and chambers found within. The poster is illustrated by Johanna Lundberg and Alan Sonne, which can be seen below.

A legend of 13 separate rooms and chambers are noted, found at the bottom left of the poster, corresponding with images of these rooms and chambers seen illustrated at the center of the poster. Translated to English, these are:
- Bedroom
- Throne Room
- Disguises of the Ancestors
- Radio Room
- Crypt
- Vault of the Disappeared
- Tomb of Ale the Viking
- Chronicle Room
- Bathroom
- Gym
- Small Treasury
- Large Treasury
- Roman Burial Vault
