Yeah! That is the guy!
I don't know what's more fun, that
or hollow earth things . . .
I think you mean Anatoly Fomeko.
His magnum opus is six or seven volumes, each volume hundreds of pages in length. Strange stuff.
He claims that the first 1,000 years of our history were essentially invented by the Catholic Church in a bid to dominate history. Christ wasn’t crucified in about AD 33 but instead in about 1085!!! He claims the crusades were a RESPONSE to the killing of Christ!
Similar ideas were advanced by one Nikolai Morosov.
Morosov was a remarkable character. In late 19c he, a university student and a nobleman, got involved in the Narodniki revolutionary movement (the idea was to agitate the peasants in Russia) and ended up in jail, where he spent most of his life, freed by the 1917 revolutions as an old man.
He wrote volumes in prison, and studied volumes. His autobiography is a fascinating read. Among other things, he advanced a theory of a historical gap of about 3 centuries, which conflated the classical Greek civilization with Christian Rome, and the Byzantium with Rome. For example, the Parthenon, according to him was a Christian Church dedicated to the Virgin. I wish I remembered the details, they were quite hilarious. I remember thinking how his perception of reality was necessarily warped by sitting in solitary confinement all his life, with, it seems, unlimited access to the prison library, while his human interaction was with the guards that brought food, and fellow prisoners with whom he communicated by knocking on the wall.