Cocytus is a realm of frozen oceans and razored glaciers. No true land exists in the seventh layer of Hell; the entirety of Cocytus is comprised of a black, icy ocean on which float glaciers the size of continents. Volcanoes occasionally rise from Cocytus' mountains of ice; some produce heated lava, which provide oases of heat amidst the deadly cold of the layers, and others instead contain intensely cold liquids capable of freezing anything they touch.
Cocytus's weather is harsh and deadly. Its temperatures often plunge low enough to freeze flesh and render adamantine brittle. Blizzards of razor-sharp ice crystals often sweep across the glaciers, and the winds can blow with enough strength to pull giants into the sky.
Places of interest
- Betzebbul, the citadel of the Lord of Flies
- Cathedral of Reflective Souls, a diabolic place of worship
- The Forest of Pillars, where traitors and saboteurs are entombed
- Tichaim, a village of the damned that must tithe each year
- Tower of the Banished Scion
Accuser devils are created within the foul cesspits of this frozen layer, shaped and formed by the mad whim of Baalzebul. Platoons of cornugons are also sent here by Moloch to continue their training to become malebranche. Gelugons also live here, lairing and scheming in remote hermitages.
The oceans beneath Cocytus' floating glaciers are home to leviathans of gigantic size. These creatures are rarely seen and known mostly from legend, but signs such as crests that shatter entire cities or giant eyes beneath the ice are recorded every few centuries.
Betzebbul is one of the few places in Hell where ayngavhauls can be found in large numbers. Within Baalzebul's palace, these devils are constantly studying the archdevil's collection of artifacts and tomes as well as altering their history to better suit the needs of Hell.
- Erik Mona et al. (2008). Campaign Setting, p. 246. Paizo Publishing, LLC. ISBN 978-1-60125-112-1
- Amber Stewart. (2009). The Great Beyond: A Guide to the Multiverse, p. 42. Paizo Publishing, LLC. ISBN 978-1-60125-167-1
- F. Wesley Schneider. (2009). Princes of Darkness, p. 18–19. Paizo Publishing, LLC. ISBN 978-1-60125-189-3
- James Jacobs et al. (2011). The Inner Sea World Guide, p. 244. Paizo Publishing, LLC. ISBN 978-1-60125-269-2
- John Compton, Adam Daigle, Amanda Hamon Kunz, et al. (2017). Book of the Damned, p. 143. Paizo Inc. ISBN 978-1-60125-970-7
- Amber Stewart. (2009). The Great Beyond: A Guide to the Multiverse, p. 41. Paizo Publishing, LLC. ISBN 978-1-60125-167-1
- Wolfgang Baur et al. (2010). Bestiary 2 (First Edition), p. 84. Paizo Publishing, LLC. ISBN 978-1-60125-268-5
- F. Wesley Schneider. (2009). Princes of Darkness, p. 57. Paizo Publishing, LLC. ISBN 978-1-60125-189-3