From WoWWiki
When
Garithos caught
Blood Elf Kael'thas consorting with the
Naga Lady Vashj he branded him as a traitor and threw him in a magical cell in the
Dungeons of Dalaran underneath the city of
Dalaran.
Vashj broke
Kael'thas out and they escaped after letting the souls of four archmagi:
Antonidas,
Conjurus Rex,
Fordred Aran and
Landazar rest. They found the
Experiment Furbolg and
Experiment Ogre the
Dalaran wizards experimented on. They let these creatures loose upon their guards. They killed
Jailor Kassan who guarded the exit to escape. This dungeon is to the southeast of
Silverpine Forest and to the north east of the
Dalaran Ruins.
