Fallout 4 is very small compared to real life, and is not topographically accurate. The Dig was created by level designer Justin Schram, who also worked on The Big Dig quest.
Once in town, follow the path on the left and look The Big Dig Fallout Wiki Fando To begin this quest, head to Goodneighbor at the east side of Greater Boston. After talking Fallout 4: The Big Dig walkthrough. You can pick this quest up from Bobbi in Goodneighbor. This is one of the side quests required for recruiting Hancock as a companion. You will find her in a small alley in the Goodneighbor.
She says that she's Fallout 4 Maps & Quests Security Office. The Sole Survivor receives the quest after speaking to Bobbi No-Nose in a backstreet in Goodneighbor. The Big Dig is a side quest in Fallout 4.