There many unexplained anomalies on earth. We can explain what photosynthesis is; we know the earth revolves around the sun and we are also capable of making a phone that unlocks with a thumb print.
But there are things in this world that still remain a mystery to this day such as :
1. The Longyou Grottoes
These are man-made caves made from slit-stones found near China, it is unknown when they were made and who made them.
2. The gate of the sun
A stone structure, for which it is unknown about how it was made or came to be. It is believed the carvings on the structure have something to do with astrological and astronomical importance.
3. Gobekli Tepe
Found atop a mountain ridge in Turkey, the temple was built before the city which shows how important religion was in those days.
4. The Voynich Manuscript
No one knows what this book is about or what language it is written in.
5. Yonaguni monument
It is unknown whether this structure is man made or naturally formed.
6. Stone Age tunnels
An underground tunnel which is completely man-made and dates back to the stone age. However, it is still unknown how they were made at that time.
7. Stone Spheres
These perfectly round spheres are around Costa Rica and go from very large to very small in size. It is unknown how they reached here or what they are for.
8. An unfinished Obelisk
This obelisk was abandoned and no one knows why.
These stacked stones sit on each other so perfectly well and that too without mortar.
One of the earliest major urban settlements with city planning, social organisation and a draining system.
The original version of this post can be found here.