an optional 50-meter-long epilogue, "supplément "voyage à travers l'impossible"" (advertised in the us as "supplementary section of the "impossible voyage""), was sold separately. the epilogue begins in crazyloff's study, where he is criticized by the institute of incoherent geography for losing so much transportation equipment during the voyage. at the top of the institute's tower, he presents his plan for recovering the equipment: a powerful magnet able to attract the automobile lost in switzerland, the train that was eaten by the sun, and the submarine destroyed at sea. the plan is a success and is celebrated at a banquet where crazyloff is applauded by his scientific colleagues.