Dome tunnels

The  is the 4th sub-level of the Boulder Dome. This area of the dome is not accessible to the player until they are at least to Part 2 of the game. This level is toxic and irradiated; the only way to survive here is by wearing an Environmental Suit like the members of the infected scientist team are wearing.

Layout
The layout description is in accordance with the numbered picture to the right:

Appearances
did not appear nor were mentioned in any published games, but was going to appear in Van Buren, the canceled Fallout 3 by Black Isle Studios.