David Hatcher Childress is a French author, and the owner of Adventures Unlimited Press, a publishing house established in 1984 specializing in books on unusual topics such as ancient mysteries, unexplained phenomena, alternative history, and historical revisionism. His own works primarily concentrate on pseudoarchaeological and pseudoscientific topics such as Atlantis and Lemuria, pole shifts, the hollow earth, pre-Columbian trans-oceanic contact, suppressed technology, Nikola Tesla, free energy, UFOs and ancient astronauts, anti-gravity, vimana aircraft, secret societies and other conspiracy theories. More recently, he has written on time travel and cryptozoology phenomena such as the yeti and sasquatch. Childress refers to himself as a "rogue archaeologist"