Ni Monn Adun, one of the most sacred sites on Aiur, is an ancient graveyard known as the "Heart of Adun". Many of Adun's greatest companions were laid to rest here, and their psionic energy permeates the air around the site, making it a way point on the Eternal Road of the Khala. The zerg attempted to occupy this area during their invasion of Aiur, but the protoss, driven by the wrath of the Conclave, fought back with incredible ferocity, defeating the zerg.
1998-06-26. Elderlands. StarCraft Compendium Map Archives. Accessed 2007-06-30