Werewolves see the Otherworlds differently with different senses, different passages, and possibly different places. Adam and Terry talk Umbra, Umbra Rev and W20 Umbra from the Scar to the planetary court.

Axis Mundi - A big book of spirits for Mage and Werewolf

Umbra: The Velvet Shadow - First Werewolf Umbra book

Umbra (Revised) - Revised edition Werewolf Umbra book

W20 Umbra: The Velvet Shadow - W20 Werewolf Umbra book

Umbra Revised on Werewolf the Podcast

Umbra high-level overview

Spirit high-level overview