Star, London, 1981, appears 1st PB printing.  ISBN 0-352-30811-7.  MMPB, 183 pages including Bibliography and Index.  Wraps show edge and cover wear, small corner creases, reading creases on spine and along front spine edge.  Interior clean and unmarked with tanned pages; binding sound but a bit cracked at black & white photo section; bit of a bow to book.  ‘Dozens of aircraft, thousands of people and millions of tons of shipping have vanished into the Marysburgh Vortex.  As the mystery deepens only unconventional explanations make sense.  Daring to cross the boundaries of normal science, Hugh Cochrane presents amazing evidence of a submerged Atlantean laser, freak infrasonic storms, close encounters, rogue ley-lines and random columns of reduced gravity.  What lies behind the heatstorms and freezing fogs of the Great Lakes?  An entrance to a parallel world, a corridor for UFOs, or a Gateway to Oblivion?’ (from rear wrap)