X-66 Hexcrete Archipelago

X-66 Hexcrete archipelago is a location in the Big Empty in the Fallout: New Vegas add-on Old World Blues. It is directly north of the Z-38 Lightwave Dynamics Research station, south east of the X-13 testing facility and west of Z-43 Innovative Toxins plant.

Layout
It is made up of large hexagonal prisms sticking upright from the ground, ranging in height from shorter than the player to several stories tall. There is also a pool of radioactive liquid which deals 1 rads per second. Two packs of nightstalkers spawn to the south and east, in range to attack any player. Also, its proximity to the X-13 research facility means that any Robo-scorpions guarding it will attack you if you venture north from this location.

Appearances
This location appears only in the Fallout: New Vegas add-on Old World Blues.