Andram (S. 'long wall'; and = long, ram = wall) was a "dividing fall" that ran across Beleriand west to east, from beyond Nargothrond to the Gates of Sirion and ending at Ramdal, being three leagues in width from north to south. The wall was pierced in two places: the gorge of Nargothrond, through which flowed the River Narog, and where the River Sirion ran underground from its falls south of the Aelin-uial to its reappearance at the Gates of Sirion.
Its easternmost hill was Amon Ereb, which usually was not considered a part of Andram (indeed Ramdal meant "Wall's End").
On the Second 'Silmarillion' Map, Andram is depicted as a long chain of hills, from the Falls of Sirion in the west to Rhamdal in the east, with a bend (not appearing in the Map of Beleriand and the Lands to the North) in the middle. These hills are barely visible on the original map because they are drawn in pencil, but they appear very clearly on the map drawn by Christopher Tolkien.
