DYK:2015 week 52

• … that Gallowspire has been the Whispering Tyrant's prison for more than 900 years?
• … that Hollow Mountain contains a vast network of Thassilonian ruins?
• … that the Pyramid of Kamaria is home to a cult of Rovagug?
• … that the Technic League would kill outsiders who own a copy of A Thread of Silver, which describes the Silver Mount?