A layer of the Near Umbra associated with nature, spirits of nature & elemental forces. Mages with a natural, elemental outlook such as shamans visit this layer of the Near Umbra unless they try to reach another. Were creatures are familiar with this layer but know little or nothing about the High Umbra. Mages with a modern, technological or more abstract outlook have a harder time reaching this layer. Also called the Spirit Umbra & the Spirit Wilds.
Extra ideas for Middle Umbra realms & spirits can be found in Axis Mundi, Umbra: The Velvet Shadow & Umbra. These three books were written for Werewolf the Apocalypse.
Book of Worlds has mage-oriented (or human-oriented) versions of Middle Umbra realms from Werewolf books. Infinite Tapestry claims the Reckoning changed Middle Umbra realms so they are all exactly like in the 2nd Umbra book (2001).