Help BURG.L find Dr. Tully's SCA.B.
How to unlock the underlying base in Grounded | Grounded New Update Walkthrough
From your previous game progress, you were tasked with finding the various BURG.L chips from different locations. After that you handed it over to BURG.L and some rewards were obtained.
When you have already reached the part where you have already given BURG.L all the BURG.L tokens, you will be given a special task.
The quest begins with your conversation with BURG.L. After the conversation, it will ask you to find Dr. Tully's SCA.B. In order to find this, BURG.L will provide the location, and it is up to you to find out where it is.