In 1930, Franz Blom visited the site, including the Pyramid of the Sorcerer. In July 1941, Jones and his pilot Bert Brodowski flew from Palmar Sur, Costa Rica to Uxmal to search for the current location of the entrance to the Akashic Hall of Records. Unfortunately, Jones' rival, the Nazi agent masquerading as as US Army Intelligence, Major Nichols, had arrived at Uxmal first, and hidden his plane.