Megolith is a class L planet located on the opposite side of the space of the Romulan Star Empire away from the Federation. A barren and desolate world, Megolith was somewhat near Lapith and Masaba.

In the 23rd century, Federation starship USS Enterprise was stranded near Masaba, where they obtained a star chart showing the name and details of Megolith. (TOS video game: 25th Anniversary)