La Fin du Monde is an excellent beer, made in much the same way as a Trappist ale, but it isn't a Trappist ale. Partially because the Royal Unibrew company isn't a Trappist monastery, and partially because monk-made beer is typically affected by wild yeast only found in the regions that they're brewed and fermented in (in addition to the yeast added by the monks). Super good beer, but it isn't Trappist.