If you try to access the door inside this tower it reads: You must solve the puzzle to enter. The hint is provided in front of the center statue: May erudition light the way! 1. Equip a Glinstone Crown (e.g. Olivinus or Twinsage). 2. Equip the Erudition gesture (obtained by giving Thops at Church of Irith the Academy Glintstone Key). 3. Perform Erudition gesture in front of the door.