Institute Sublevel 21-D

The Institute Sublevel 21-D is a section of the Institute in Fallout 4.

Background
This small underground area is the nucleus of the Institute's expansion even further underground. Gen 3 synths labor in its tunnels, overseen by Gen 2 guards.

Layout
A small area, with an Institute storage room and the expansion caverns, where synths work on expanding it ever further underground with restored megaloaders.

Inhabitants

 * G9-81
 * 3 unnamed synths
 * 4 gen-2 synth guards

Loot

 * Implant update session 7, a holotape located on the right side of the leftmost shelf when coming from the elevator at ground level.

Appearances
Institute Sublevel 21-D appears only in Fallout 4.