Walk The Abyss is an ability in Vampire: The Masquerade - Redemption from Common Discipline consisting in the creation of a glowing portal in a location which allow teletransportation to the character's Haven.
Walk the Abyss portal is one return journey, or infinite one-way trips
As with all portals, the two dimensional plane through which one must pass is glowing, but Nihilistic went a step further, giving the plane a frame: an ornate door frame, also glowing.
Walk The Abyss can be used to avoid the werewolf combat in London after the Tower of London. Teleport back to the Bridge Haven rather than pass the front gate of the Tower of London. If the user only ever return to the Haven with it, it will stay up the whole playtime.
Although Walk The Abyss along with Awaken abilities aren't inherent to vampiric condition their are qualified as Common abilites in the game for it's transcendent and universal condition.