In october this year Jesús Gamarra showed many special places in and near his hometown Cusco to famous author Graham Hancock.
He showed Graham which building styles would be remnants of the lost
culture, a subject that Graham again is investigating, and on which he
will soon write a sequel of his famous book "Fingerprints of the Gods".
According to Jesús Gamarra, there is not one lost culture, but 2, a
subject about which we made a documentary named "The Cosmogony of the
Three Worlds". See; http://www.ancient-mysteries-explained.com/archaeology-proofs.html#dvd