From the Mirage continuity, this is actually the family's second sewer lair. Their first lair under Manhattan was partially destroyed and abandoned in Volume 1 Issue 2 when it was discovered by Baxter Stockman's Mousers, when the turtles were 15 years old. It would not be permanently lived in by anyone again for at least two years. The turtles moved into their new friend April O'Neil's Second Time Around building, later joined by Splinter, where they lived for over a year. After the building was destroyed by Shredder's resurgent Foot Clan, the turtles, Splinter and April moved with Casey Jones to the Jones Farm in Northampton, Massachusetts, where they all lived together for at least another whole year. After the turtles killed Oroku Saki during the Return to New York arc, they and Splinte