Cool stuff of the unexplained.

I find this absolutley fascinating

Workmen hacking and burning their way through the dense jungle of Costa Rica to clear an area for banana plantations in the 1930s stumbled upon some incredible objects: dozens of stone balls, many of which were perfectly spherical. They varied in size from as small as a tennis ball to an astonishing 8 feet in diameter and weighing 16 tons! Although the great stone balls are clearly man-made, it is unknown who made them, for what purpose and, most puzzling, how they achieved such spherical precision.

In 1938, an archaeological expedition led by Dr. Chi Pu Tei into the Baian-Kara-Ula mountains of China made an astonishing discovery in some caves that had apparently been occupied by some ancient culture. Buried in the dust of ages on the cave floor were hundreds of stone disks. Measuring about nine inches in diameter, each had a circle cut into the center and was etched with a spiral groove, making it look for all the world like some ancient phonograph record some 10,000 to 12,000 years old. The spiral groove, it turns out, is actually composed of tiny hieroglyphics that tell the incredible story of spaceships from some distant world that crash-landed in the mountains. The ships were piloted by people who called themselves the Dropa, and the remains of whose descendants, possibly, were found in the cave.

Etched into the earth on the Nazca Plains in Peru are giant symbols drawn perfectly straight. Some are hundreds of metres long. They look as if they were drawn by some giant hand two thousand years ago. And the strange thing is, they can only be seen from the air. So how did the ancient Nazcans draw them? Researchers say they could have created hot air balloon or kites to fly and view their work. Indeed, an experiment was carried out and it proved that the Nazcans could have made a working balloon. The symbols themselves are of animals and plants. Yet some are long strips of land without any direct meaning. A writer named Erich Von Daniken believed that these were landing strips for alien spacecraft, and that aliens could have drawn them. They may also be for contacting these aliens. Maria Reiche, an astronomer, says that these lines may be used as a calendar, or to keep track of the stars and planets. There is a monkey drawing that has a coiled tail that looks similar to the orbital lines of our solar system. There are even more obscure theories that suggest that there were giant people 2,000 years ago. Yet, they are still a mystery.

All this and more that we have no idea of what and where it came from and yet we are still exploring space.

lets finish one book before we start another, shall we?