It was not intended for war - its top sides are bound to two intake towers by a series of bridges. No doubt snipers nest there. On the far side of the dam, a small building provides access to the power plant below. That is where Oliver hides.”— Legate Lanius
General Lee Oliver's Compound is a small office in Hoover Dam that he uses to brief the player character before the quest Eureka!, or it is where he makes his last stand in Veni, Vidi, Vici. General Oliver also states that there is secret passage, somewhere in the compound that he can use to escape Hoover Dam.
This location is inaccessible unless the player is doing the main quests Veni, Vidi, Vici or Eureka!.
Oliver's Compound appears only in Fallout: New Vegas.