I have a theory in my mind, as depicted in hollywood movie 'sparta 300' why is it shown that when spartans go with war against persians, the persians come from the side of a mountain pathway. Till then the spartans are not able to see them. In the hindu vedic scriptures in depictions there is mention of patal, the sky path. So do the persians then traverse through time reach towards the sky and then again return towards the earth. Such that as god created earth and human beings. Then humans made pathways patal in the sky. When they saw time being of their future not in their favour they ran towards the skywards from their they saw earth as 90,000 ft altitude like world map with ants moving! Then when the time regained normal they came back to earth! Thus gaining in karmic lives of birth and death cycle! But in the maps nor seen from even the satellites there is no such place nor the road which connects to the above! http://en.wikipedia.org/wiki/Patala Then is our world also netherworld?