From publisher blurb:
Every three years, on the night of the winter solstice, a mysterious tower appears deep within the haunted Ringwood forest. Disappearing before sunrise, its close proximity to the University of Scarthey is an unsettling enigma.
Archchancellor Gwydion Ambrosius has called upon you and other Rector agents to investigate. What will you find inside?
Gear Heart is an adventure short compatible with the Pathfinder Roleplaying Game and designed for 1st to 5th-level characters (Tier 1–5; Subtiers 1–2 and 4–5). It includes a location map. The Pathfinder Roleplaying Game Bestiary 3 is required for play.