A portal is a magickal device that connects two worlds together. Using a portal, one can traverse from one realm to another. Portals can only be built in certain locations, which must be found before they can be used. It is possible to link portals together so people can "skip realms", making portals a good tool for long range travel. An example of a portal is the Bolted Door on Avalon, which connects Salior to Alew.