Hve you ever asked your mother whether she is the only your real mother or you are a adopted kid..Not to hurt you...As you believe in you Mom, similarly Hindus should believe in their God's existence. Some 8 Lac yrs ago..How can one expect any evidence to exist..Moreover..Hven't you heard of Chitrakoot, Ramtek, Nashik(Panchvati), and Rameshwaram..Are these not sufficient?