Belly of the Beast

Belly of the Beast is a main quest in Fallout 76.

Quick walkthrough

 * Use four Brotherhood emergency transponder radios to find Elizabeth Taggerdy's location. Game doesn't checkpoint radio progress, so if logged out, likely will have to start over to maintain radio progress until get inside cavern for location guide to Taggerdy (large cavern).
 * Head and enter the glassed cavern
 * Make your way through the caverns towards the last transponder radio
 * Kill the Scorchbeast blocking you from the last transponder, if necessary
 * Use the last transponder next to Taggerdy's body
 * Pick up Lieutenant Elizabeth Taggerdy's ID from her corpse so that you can access the information on her terminal and also use it to access the elevator outside the Asylum if you don't have your own military ID.
 * Get out of the Caverns and head back to Fort Defiance. There is an exit near Taggerdy to leave the caverns if necessary
 * Use Taggerdy's terminal to learn more about the Scorched, Scorchbeasts, and ultracite power armor