I have written a few articles, quoting Hindu Purana, Archaeology,Astronomical Dating,Comparative Study of Cultures ,Etymology of Languages that the Americas are the Patala Loka, Nether World described in the Hindu Texts is the Americas.The ancestors of the ancient Americans were Hindus/Tamils.
The Ramayana describes the travel of Indrajit,son of Ravana, to Patala Loka to conduct a Yagnya to ensure success in the battle against Rama and Lakshmana.
This Patala Loka was inhabited by Mahi Ravana,also called Ahiravana, brother of Ravana.
Ahiravan (Ahiravan or Mahiravan), brother of Ravana, was a rakshasa who secretly carried away Rama and his brother Lakshmana to the nether-world, consulted his friends and decided to sacrifice the life of the two divine brothers at the altar of his chosen deity, goddess Mahamaya. But Hanuman saved their life by killing Ahiravan and his army.
In the Ramayana, during the battle between Rama and Ravana, when Ravana’s son Indrajit is killed, Ravana calls his brother Ahiravana for help. Ahiravana, the king of Patala (the Underworld), promises to help. Vibhishanasomehow manages to hear about the plot and warns Rama about it. Hanuman is put on guard and told not to let anyone into the room where Rama and Lakshmana are. Ahiravana makes many attempts at entering the room but all of them are thwarted by Hanuman. Finally, Ahiravana takes the form of Vibhishana and Hanuman lets him enter. Ahiravana quickly enters and takes the “sleeping Rama and Lakshmana” away.
When Hanuman realizes what has happened, he goes to Vibhishana. Vibhishana says, “Alas! They have been abducted by Ahiravana. If Hanuman does not rescue them fairly quickly, Ahiravana will sacrifice both Rama and Lakshman to Chandi.” Hanuman goes to Patala, the door to which is guarded by a creature, who is half Vanara and half reptile. Hanuman asks who he is and the creature says, “I am Makardhwaja, your son!” Hanuman is confused since he did not have any child, being an adept Brahmachari. The creature explains, “While you were jumping over the ocean, a drop of your semen(veeriya) fell to the ocean and into the mouth of a mighty crocodile. This is the origin of my birth.”
One has to go 70000 yojanas deeper in earth to reach to reach there.
Mexico and Brazil are exactly below India and one has to dig a hole(tunnel) of that distance to travel vertically.
Now the entrance used by Indrajith and Hanuman is in Patalkot (Sanskrit for “very deep”) is a valley in the Chhindwara district of Madhya Pradesh, India.
The Patalkot valley is spread over an area of 79 km2. at an average height of 2750–3250 feet above Mean Sea Level from 22.24 to 22.29 ° North and 78.43 to 78.50 ° East. The valley is located at a distance of 78 km from Chhindwara in the North-West direction and 20 km from Tamia in the North-East Direction. ‘Doodhi’ river flows in the picturesque valley. This horse–shoe shaped valley is surrounded by giant hills and there are several pathways to reach the villages located inside the valley.
There is a belief that after worshipping ‘Lord Shiva’, Prince ‘Meghnath’ had gone to Patal-lok through this place only. People say that Kings ruled this place in the 18th and 19th Centuries and that there was a long tunnel connecting this place to Pachmarhi in Hoshangabad District. Traditionally, the site is believed to be the entrance to Patal. This valley had long been cut off from the civilized culture outside and was discovered only few years back. Patalkot has been a home to a tribal culture and custom since its origin.