Underchasm in 1479 DR

The Underchasm was a huge canyon created by the spellplague in 1385 DR that ran roughly north to south from Akanûl to the borders of Halruaa. The chasm extended all the way to the Underdark.[1] The upper Underchasm was home to many flying monsters such as dragons.[2]


  1. Jak Koke (August 2009). The Edge of Chaos. (Wizards of the Coast). ISBN 978-0-7869-5189-5.
  2. Bruce R. Cordell, Ed Greenwood, Chris Sims (August 2008). Forgotten Realms Campaign Guide. (Wizards of the Coast), p. 120. ISBN 978-0-7869-4924-3.