Beleriand is a MUSH using the PennMUSH coding founded in 1995 with a Tolkien theme. The setting is Beleriand during the First Age of Middle-earth, which is drawn mainly from The Silmarillion and from relevant volumes of The History of Middle-earth series.
Beleriand may be found by connecting to beleriand.mux.net (208.185.25.66) on port 4739.