Do Extraordinary Claims Require Extraordinary Evidence?

[Brian37]

What ancient event is verifiable?

The ones that leave geological or archaeological evidence. Pompeii is a great example.

I wouldn't put it like that. Archaeology DOES prove the existence of religious claims, but only a history of those claims being handed down. Archaeology does not however make truth statements about claims of magic and super powers. It merely reports what it finds, including religious claims. 

Popeii's population was full of polytheists at the time of the 79CE eruption, but that would not make their gods real. It merely means we have records of what they believed a the time.