Everything that was said here happened in the 20th century .. Many have observed these striking phenomena, but believed to have been the victims of mass hallucinations. However,... For the first time, all these inexplicable phenomena, incredible cases and incidents that do not fit into our usual ideas about the world are collected in this book, and in chronological order, and are presented in a fascinating form. Other books by H. N. Unbeknownst to Nat. House: Mysterious movements and disappearances Wanderers of the Universe + Unexplained phenomena + Discovery after discovery + Event after event What happened to the destroyer "Eldridge" The most incredible cases