Hanuman travelled to Patala Loka (South America) through a Tunnel worshipped in south America

During battle between Rama and Ravana, Mahiravana, the step-brother of Ravana kidnaps Rama and Lakshmana and takes them to Patala Loka through a tunnel.
Patala Loka is described to be exactly below earth (then India) and 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.

There are few such tunnels which are said to be leading to Patala Loka. The Patalkot valley in the Chhindwara district of Madhya Pradesh, India is one among them.
Ravana’s son Indrajit is killed by Lakshmana, Ravana calls his brother Ahiravana for help. Ahiravana, the king of Patala, promises to help.
Vibhishana somehow 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 through one such tunnel to his kingdom, which is on opposite side of earth to India-SriLanka.
Realizing the kidnap, Hanuman is warned by Vibhishana that if Rama and Lakshmana are rescued immediately, Mahiravana and his brother Ahiravana will sacrifice their heads to goddess Chandi.
Hanuman goes to Patala through same tunnel as Mahiravana and at finds the entrance of Patala Kingdom guarded by a creature, who is half Vanara and half reptile (crocodile).
Hanuman asks who he is and the creature says, “I am Makardhwaja, Hanuman’s son!” Hanuman is confused since he did not have any child and practiced celibacy throughout life.
He decides to kill Makaradhwaja for lying, but Suvarchala, a mermaid (reptile) comes up and stops him.
She explains that while Hanuman took a dip in the waters of sea, after burning whole of Lanka with the fire burning on his tail, a drop of his perspiration fell into mouth of a mighty reptile (crocodile) who was Suvarchala.
Out of her, the Makardhwaja was born. (Makara = Crocodile).

Ahiravana’s men brought him to their kingdom and made him their security guard.
Makardhwaja asked him for his blessings, however, he said to Hanuman, that he will have to fight him to enter Patala, as he cannot betray Ahiravana, his mentor. Hanuman defeats Makaradhwaja in a duel and binds him to proceed further to ultimately kill Ahiravana and rescue Rama & Lakshamana.
Hanuman takes the form of Panchamukhi (five faced) to kill Mahiravana as he had to extinguish five lamps (life of Mahiravana is in 3 places, lamps are one of them) burning in five different directions at the same time.
So he has taken the Panchamukha form with Hanuman, Hayagriva, Narasimha, Garuda and Varaha faces and extinguished the lamps and killed Mahiravana.

Later on, upon Rama’s advice he installed Makardhwaja, as King of Patala before returning to Lanka, to continue war with Ravana.

Makaradhwaja is being worshipped as God since then in South and Central America

La Ciudad Blanca [la sjuˈðad ˈblɑnkɑ], Spanish for ‘The White City‘) in Honduras, Central America is supposed to be the ‘Lost City of the Monkey God‘ where, legend says that local people worshipped huge ‘Monkey Sculptures‘.
Theodore Morde – an American adventurer, claimed that sacrifices were made by local Indians to a gigantic idol of an ape.
The movie Apocalypto shows tribes of america offering sacrifices of humans.
After King MahaBali settled in America, his men continued the demonic sacrifices and few other practices.
The discovery of 5000 years old Havan Kund in Peru is one such example.

References :

• Makaradhwaja
• Ahiravan
• Patalkot, tunnel to Patala Loka
• citation-booksfact.com
• Dailymail.com