The Rikkan Falls, also known as Rikkan's Falls, complicate travel up the Adivian River north of Westcrown in the Chelish Archduchy of Longmarch. The nearby Rikkan Ports of East Rikkan and Westpool subsist largely on providing services for ships moving cargo between Westcrown and the Chelish interior, as larger ships must unload their cargo and transfer it to barges or carry it by hand upriver.
- Amanda Hamon Kunz, Ron Lundeen, and Mark Moreland. (2015). Cheliax, The Infernal Empire, p. 19. Paizo Inc. ISBN 978-1-60125-799-4
- Amanda Hamon Kunz, Ron Lundeen, and Mark Moreland. (2015). Cheliax, The Infernal Empire, p. 40. Paizo Inc. ISBN 978-1-60125-799-4
- James Jacobs, F. Wesley Schneider, Amber Scott, Hank Woon. (2009). Council of Thieves Player's Guide, p. 12. Paizo Publishing, LLC.