Much like the Plane of Earth, the Plane of Ice was primarily solid towards its center, though caverns and crevasses cut through the otherwise solid ice in places. Where the plane bordered the Plane of Water, scattered icebergs floated; where it bordered the Plane of Air, the ice ended in a jutting white wall.
This solid ice wall was a surface upon which one could walk, a sheet of craggy ice extending in all directions as far as eye could see and where hazardous blizzards scoured. Icy mountain peaks erupted from the surface in places. The air was breathable on this surface, but the temperature was deathly cold. This region of the plane was called the Precipice, and many visitors foolishly thought it to represent the whole plane, though the majority of the plane existed below the Precipice.
Gravity existed on this para-plane; up was towards the Plane of Air, while down was towards the Plane of Water. When one approached the "bottom" of the place, more and more water was present until the ice broke up into chunks atop the Plane of Water. This border region was called the Sea of Frozen Lives. Because of how it seemed like the icebergs of the Sea of Frozen Lives seemed to float upon the Plane of Water, some called the Plane of Ice itself the Floating Plane or the Bobbing Plane.
In the lateral directions, once could travel along the endless ice to the borders of the Negative Energy Plane, the Quasi-Elemental Plane of Salt, the Positive Energy Plane, and the Quasi-Elemental Plane of Steam. These border regions were known as the Frigid Void, the Stinging Storm, the Shimmering Drifts, and the Fog of Unyielding Frost, respectively. The Frigid Void was free of snow and blizzards and a region of absolute darkness and cold. The Stinging Storm was an area of hailing salt storms. The Fog of Unyielding Frost was full of bitter cold vapors that could freeze one's lungs. The Shimmering Drifts was perhaps the oddest region, as the snow falling here was infused with an energy that could cause severe confusion to those it contacted.
The majority of the plane, however, existed below the Precipice. About half of the caverns within this endless ice were elemental pockets of air; the others were essentially underwater lakes full of ice-cold waters. Some boulders were also deeply buried in the ice as well.
Not all regions of this para-plane were the same temperature. Some areas could be survived with only mundane means of warmth, but other areas were so cold that only by means of magic could one survive. Some scholars insisted that the plane had some areas so cold that the very words one spoke would freeze solid. In Sigil some merchants sold bottles of distilled "chaos" and "sadness", prepared from such frozen ideas. Others said that even light itself would freeze here in this "true cold".
To reach the Plane of Ice with the plane shift spell required a planar fork of pewter, an alloy of lead and tin. However, it was risky for travelers from other planes to shift to the Frostfell, for they might end up embedded in the ice. If damage from the cold did not slay them, they would be unable to move. Whether they lived or died, their bodies would be incredibly preserved. If they did not die from the cold, they were likely to be crushed by the extreme pressure of the ice.
Travel within the plane was equally dangerous, whether walking atop the Precipice or tunneling deep within the Core Ice, for the entire para-plane was subject to constant shifting and buckling of the ice. There were avalanches and sinkholes and crushing fissures.
Besides mundane travel from one of the other Inner Planes, the Para-Plane of Ice could be reached through portals, but few such permanent portals existed naturally. A portal to Cania was here, and some planewalkers claimed that one existed to Muspelheim in Ysgard as well. Two portals to the Abyss were rumored to exist, one of which was to the Soulfreeze, layer 566.
The Plane of Ice was unique among the Para-Elemental Planes in that it had a powerful archomental desiring to establish his realm with the full status of a major Elemental Plane. Lord Cryonax longed for ice to be considered the fifth element and wanted the borders of his realm to be the Para-Elemental Planes of Slush and Snow. His ambitions even stretched so far that he hoped to supplant the other Elemental Planes altogether!
- Chiseled Estate, Cryonax's fortress in the very center of the plane.
- Mountain of Ultimate Winter
- Ytharior, otherwise known as the "Blood Mire." A frozen lake of blood that formed from an intense battle between frost giants, ice trolls, and snow trolls.
Nearly three-quarters of the open caverns with the ice contained life. A little fewer than half of such living creatures found there would be beings of air, while the rest would be beings of ice. In the subterranean lakes, more than a quarter would be beings of water, with the rest being creatures of ice. In both cases, such lifeforms would be immune to the effects of the bitter cold of the water.
Most fauna found here were icy, angular counterparts to creatures of the Prime, looking much like ice or snow sculptures. Such entities could move freely and unharmed through ice, water, and air in the other Inner Planes. It was also common to find yetis, remorhazs, and white dragons among the plane's inhabitants.
Among the more intelligent planar creatures, ice mephits were native to the plane. Marids and djinn sometimes visited, but neither were native to the Frostfell. The marids often hunted here.
- Mike Mearls, Jeremy Crawford, Christopher Perkins, James Wyatt (2014). Dungeon Master's Guide 5th edition. (Wizards of the Coast), p. 57. ISBN 978-0786965622.
- Monte Cook and William W. Connors (December 7, 1998). The Inner Planes. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), pp. 68–73. ISBN 0-7869-0736-3.
- David "Zeb" Cook (1994). Planescape Campaign Setting, A DM Guide to the Planes. Edited by David Wise. (TSR, Inc), p. 34. ISBN 978-1560768340.
- Jeff Grubb (July 1987). Manual of the Planes 1st edition. (TSR), p. 12. ISBN 0880383992.
- Bruce R. Cordell (1998). A Guide to the Ethereal Plane. Edited by Michele Carter, Keith Francis Strohm. (TSR, Inc.), p. 20. ISBN 0-7869-1205-7.
- Jeff Grubb (April 1987). “Plane Speaking: Tuning in to the Outer Planes”. In Roger E. Moore ed. Dragon #120 (TSR, Inc.), pp. 42–43.
- Jeff Grubb (July 1987). Manual of the Planes 1st edition. (TSR), p. 51. ISBN 0880383992.
- Jeff Grubb (July 1987). Manual of the Planes 1st edition. (TSR), p. 52. ISBN 0880383992.
- Jeff Grubb (July 1987). Manual of the Planes 1st edition. (TSR), p. 53. ISBN 0880383992.
- Monte Cook and William W. Connors (December 7, 1998). The Inner Planes. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), p. 73. ISBN 0-7869-0736-3.
- Monte Cook and William W. Connors (December 7, 1998). The Inner Planes. Edited by Michele Carter and Ray Vallese. (TSR, Inc.), p. 72. ISBN 0-7869-0736-3.
- Mike Mearls, Jeremy Crawford (May 29, 2018). Mordenkainen's Tome of Foes. Edited by Kim Mohan, Michele Carter. (Wizards of the Coast), p. 223. ISBN 978-0786966240.
Prime Material plane • Feywild • Shadowfell • Fugue Plane
Transitive Planes: Astral Plane • Ethereal plane
Inner Planes: Elemental Plane of Air • Elemental Plane of Water • Elemental Plane of Earth • Elemental Plane of Fire • Elemental Chaos
Para-Elemental Planes: Frostfell • Swamp of Oblivion • Fountains of Creation • Great Conflagration
Quasi-Elemental Planes: Lightning • Radiance • Minerals • Steam • Vacuum • Ash • Dust • Salt
Outer Planes: Arcadia • Mount Celestia • Bytopia • Elysium • Beastlands • Arborea • Ysgard • Limbo •
Pandemonium • Abyss (Layers) • Carceri • Hades • Gehenna • Nine Hells • Acheron • Mechanus
Energy planes: Positive Energy plane • Negative Energy plane
Planar Pathways: Infinite Staircase • Oceanus • Mount Olympus • Styx • Yggdrasil
Prime Material plane • Cynosure • Fugue Plane
Transitive Planes: Astral Plane • Ethereal plane • Plane of Shadow • Spirit World
Celestial Outer Planes: Arvandor • Brightwater • Dwarfhome • Dweomerheart • Gates of the Moon • Golden Hills • Green Fields • House of Knowledge • House of the Triad
Fiendish Outer Planes: Abyss (Layers) • Barrens of Doom and Despair • Blood Rift • Clangor • Deep Caverns • Demonweb Pits • Fated Depths • Fury's Heart • Hammergrim • Nine Hells • Nishrek • Supreme Throne
Neutral Outer Planes: Dragon Eyrie • Heliopolis • House of Nature • Jotunheim • Warrior's Rest
Inner Planes: Elemental Plane of Air • Elemental Plane of Earth • Elemental Plane of Fire • Elemental Plane of Water • Positive Energy plane • Negative Energy plane
Planar Pathways: Infinite Staircase • River of Blood • World Tree
Prime Material plane
Fundamental planes: Astral Sea • Elemental Chaos
Astral dominions: Arvandor • Banehold • Celestia • Cynosure • Deep Wilds • Demonweb Pits • Dismal Caverns • Dwarfhome • Eternal Sun • Fugue Plane • Gates of the Moon • Green Fields • House of Knowledge • Nine Hells • Nishrek • Supreme Throne • Towers of Night • Tu'narath • Warrior's Rest
Elemental realms: Abyss (Layers) • City of Brass • Cresting Spires • Fimbulwinter • Hidden Realm • Muspelheim • Root Hold • Sky Home • Steading • Thraotor • Undying Pyre • Zerthadlun
Parallel planes: Feywild • Shadowfell
Anomalous planes: Far Realm