Mechanite Mountain
From Halopedia, the Halo wiki
Mechanite Mountain is one of many mountains in the Highland Mountains ranges in the northern continents of the UNSC planet Reach and is home to the ONI CASTLE Base. In approximately 2532, Mechanite Mountain was converted into the ONI Underground Base.
After Dr. Halsey activate Operation: WHITE GLOVE to prevent the Covenant from getting UNSC technology was destroyed.
