this be the fourth and last fantasy adventure for the actor director team of doug mcclure and kevin connor after the land that time forget ( 1974 while undeniably the best of the bunch ) and at the earth core ( 1976 ) and the people that time forget ( 1977 ) . the result silly and terminally juvenile be a disappointment represent besides waste a good cast ( daniel massey and michael gothard and cyd charisse ) and the sci fi trapping of the plot be ill suit to the material while the hokey monster effect and then and seal the fate of this low budget venture . in fact and the location shooting ( in malta and no less and and the small neighboring island of gozo ) be among the film few asset .