Descent into the Dark UmbraEdit
Most Umbra-traveling Garou journey through the spirit world: the area mages refer to as the Middle Umbra. This sinister rite enables Silent Striders to cross into the world of the Dead: the Dark Umbra.
The Strider must sacrifice a living creature (usually an animal, though there are rumours...) and make an Intelligence + Rituals roll (difficulty 7). She must then make a normal roll to enter the Umbra. If both rolls succeed, the Garou enters the Underworld (see Wraith: The Oblivion for details of this frightening place). If she botches the rite, she becomes stuck sideways between the physical world and the Dark Umbra.
Source: Silent Strider Sourcebook