The Federation starbase where a young Ensign Jean-Luc Picard was stabbed through the heart by a Nausicaan.
Starbase Earhart was a Federation starbase where Jean-Luc Picard spent shore leave with his friends Corey Zweller and Marta Batanides just after graduating from Starfleet Academy, while awaiting his first assignment.
In Tapestry, Q gave the mortally wounded Picard a chance to relive those days. In the original timeline, Picard joined a fight with Nausicaans over a rigged game and was stabbed through the heart, requiring an artificial replacement. When Picard avoided the fight, he survived intact but became a cautious, unremarkable officer, and he chose to restore his original past.