The Orgrimmar Tunnels are a tunnel near of Orgrimmar, Durotar, that Gazlowe and goblins made in search for water for the Horde, however they mine directly to a Kobold den. The entire group of kobolds was killed by Rexxar, Misha, Rokhan and Chen Stormstout, after this Gazlowe and his goblins could finish their job.