The Webway is a vast, interconnected network of tunnels and pathways used by the Eldar, a fictional alien race in the Warhammer 40,000 universe. It exists outside of normal space and time, allowing for rapid travel between distant locations without the dangers of the Warp, a chaotic dimension filled with malevolent entities. Constructed by the Old Ones, the Webway serves as a safe passage for the Eldar, helping them avoid the predations of the Chaos gods. However, parts of the Webway have been lost or corrupted, leading to dangerous areas that can trap unwary travelers.