The Underground World (1943) is the sixteenth of seventeen animated Technicolor short films based upon the DC Comics character Superman. Produced by .\rbr\rbrA discoverers son takes Clark Kent and Lois exploring in unknown regions of Henderson Caverns. Henderson and Lois enter an underground world of .\rbr\rbrPlaylist all episode : ======================= The Fleischer & Famous Superman cartoons are a series of seventeen animated .\rbr\rbr\rbr\rbrThis is the 6th Superman short on the DVD collection Superman: The Eleventh Hour. In it, Clark Kent and Lois Lane go underground to find an empire of bird .