Yes , you read the subject of the mail correctly - there are some really bizarre lakes , high up in the remote Peruvian Andes , whose lake beds appear as though they have an electronic circuit board imprinted on them ! This is so strange that nobody has yet even attempted an explanation .
One thing is clear though that locals in that area have frequently witnessed UFO/Vimana type craft emerging abruptly from those lakes or splashing into them . It could be that there is an access to inner earth via openings/tunnels in those lake beds . Peru is full of such mysterious zones and artifacts :
http://www.ufosightingsdaily.com/2014/04/underwater-alien-cities-in-andes-of.html
https://www.youtube.com/watch?v=MY7Rzgin8uA
Regards