Our world is so vast that it contains everything. Even rocks can lay eggs. For tens of hundreds of years a mountain cliff in Sandu County of Guizhou Province in southern China has continually laid stone eggs. Furthermore, it is said that it would do so every 30 years.
According to Beijing Science and Technology News this peculiar cliff is found amidst the rising mountain hill near the Gulu stronghold in Guizhou's Sandu County. The entire mountain is covered with green trees and weeds, with a rocky cliff protruding from its mountainside. The cliff is said to drop from its walls a number of egg-shaped stones every 30 years. For this reason, locals have customarily called it Chan Dan Ya (Egg Producing Cliff.)
Chan Dan Ya is approximately 20 meters in length, 6 meters in height, and its surface is extremely uneven. It is extremely steep with a few huge and pointy rocks extending upwards diagonally. Due to its unusual shape, the stone eggs are peacefully incubated in the hollows beneath overhangs in the precipice wall. Some have just begun to form, while others have halfway emerged. Some are already mature in development, and at any moment will separate from the body of the mountain.
The stone eggs of Chan Dan Ya average about 30 centimetres in diameter, though some are bigger than others. The majority of them are circular or oval in shape, and light yellow in colour. These eggs are similar in shape and size to the dinosaur eggs fossils discovered in the city of Heyuan, Guangdong Province, in 1995.
Such a unique phenomenon of stone eggs dropping in 30-year intervals from an ice-cold rocky wall is bizarre, if not mystical.
After analysis and evaluation, it was discovered that the geologic timescale of the rock egg region dates back to the Cambrian period, prior to the Triassic and Jurassic periods, making the formations about 500 million years old. Oddly, however, the rocky wall of Chan Dan Ya was found to be made up of a structure of calcareous rock that is common in many geological regions on earth. This then raises the question of how the 500 million-year-old Cambrian egg-shaped stones could come together with a common calcareous rock wall. It is indeed quite odd.
Who actually bestowed these cliffs with mysterious power to generate rock eggs?? The unfathomable enigmas through the ages hiding within the steep lofty mountain cliff have remained unsolved.
The entire Gulu stronghold area has only a small community of merely 20 or so households. Within the village, however, only 68 stone eggs have been preserved altogether. The people of Gulu stronghold all feel honoured to have one of these stone eggs in their homes. This is because they believe that whichever house has a stone egg will thereafter enjoy prosperity for their people and livestock and have no worries for their clothing and food.