The Nether highways are a series of highways on 2b2t running from 0,0 Nether. The highways have a distinct design and a not entirely documented history. Maintenance of the highways is done by various groups as well, and they are the most prominent source of travel on the server. As of 2020, all axis Nether highways, and their diagonal counterparts, extend to the overworld world border. The highway system is made up of obsidian, with netherrack used in later parts of the highways as a substitute to the expensive material. However, due to the nature of dupes on 2b2t, obsidian is very common and is always being used in the highway system.
