Admiral Byrd secret diary Operation High Jump hollow earth

After the passing of Admiral Byrd his son found his diary and eventually published it. This is a small excerpt from the book titled, The Missing Secret Diary of Admiral Byrd. By Richard Evelyn Byrd. It is still available at major book retailers. I do not claim validity of this story. That is up to you to decide. I do find this story to be a great addition to my Mysterious Tales playlist found here...