Fourteen minutes of lost animation from Monty Python and the Holy Grail have resurfaced after sitting in an archive for the last four decades. The forgotten illustrations are the work of the film’s co-director, Terry Gilliam, who went on to direct live-action classics like Brazil (1985) and Time Bandits (1981).

In the commentary for the animation, Gilliam jokingly claims that jealous members of the Monty Python gang, afraid of being overshadowed, surreptitiously cut the footage from the film before its release. Throughout the video, Gilliam’s commentary ranges from charmingly facetious to genuinely informative: he goes on to explain elements of his animation process, as well as the works that inspired his style. 

The animation and commentary, which were released in time for the film’s 40th anniversary, are a holy grail for any fans of the British comedy troupe—or animation in general. Check out the video below:

[h/t: The Verge]