After wrapping up in England, production travelled to Morocco in June, with filming taking place in Oujda, Tangier and Erfoud, after preliminary work was completed by the production's second unit. An explosion filmed in Morocco holds a Guinness World Record for the "Largest film stunt explosion" in cinematic history, with the record credited to production designer Chris Corbould. Principal photography concluded on 5 July 2015. A wrap-up party for Spectre was held in commemoration before entering post-production. Filming took 128 days.

Answer this question, if possible (if impossible, reply "unanswerable"): What Guinness record was set during the filming of Spectre?
Largest film stunt explosion