Mysterious Engraved Stones Found In Peru

Peru is situated in the South Western Americas. A cultural anthropologist Dr Javier Cabrera of Ica University explored some 1100 stones from the mausoleums of Inca civilization in 1930. These stones carry various engraved figures, some of them show different sexual methods while, others having engraved figures of dinosaurs and other animals of the ancient era. Some of them are those that stun the humans of modern age. Because they depict the engraving of heart surgery, Cabrera theorized that ancient gliptolithic man possessed highly technical knowledge of medical procedures, and had discovered a means of overcoming rejection of organ transplant that are just now being utilized by modern medicine. Shown in a series of carvings are the isolation and extraction of cellular material in a pregnant woman's placenta with the reintroduction into the transplant patient to eliminate the possibility of rejection. Artificial life support systems are featured using an unknown energy conveyed through the surgeons themselves. There is work with genetic codes and the prolongation of life. Blood vessels are shown being reconnected via re-absorption tubes utilizing the natural regeneration of cells. There are descriptions of cesarean section with acupuncture as a form of anesthesia.
In another series, four stones show the hemispheres of Earth pointing to the existence of unknown continent's that today remains a part of our collective mythology. The age of these stones has been estimated from 500 to 1500 years. What are these the scenes of heart surgery and transplant of brain? Were the Inca people aware of the minutest details of brain and heart that modern medical science came to know now? The mystery is yet to be solved
*--- Huge Stone Spheres of Costa Rica:--

Costa Rica is situated in Central America. During 1930 trees and bushes were cut and jungle was cleaned to grow banana orchard. Meanwhile, the laborers saw some spherical stones some of which were nicely rounded. The number of these spheres is in dozens. The smallest one is as equal to the size of tennis ball while, larger stones are of 8 feet diameters and weigh nearly 16 tonnes each. Interesting thing is that they have been made by human hands manually. After great search and thinking it has not been known yet that who made them and why? The question is that how they were made in correct spherical shape while ancient man can not be expected to do so. It is an unveiled mystery yet.