The Webway is a network of extra-dimensional pathways created by the Old Ones, but used by the Eldar for FTL travel. Unlike the Warp, the Webway remains free of Chaos infestation and is consequently safer and faster, although much of it has fallen into disrepair. It also serves as the location of Commorragh, the capital city of the Dark Eldar. Webway navigation is very dificult and is beyond the capacities of Humans, Orks or the Tau.
In addition to the main Webway system, the Eldar have the ability to create temporary tunnels.