In case you haven’t heard about the Longyou Caves let us bring you up to speed real quick. Basically, they were originally built around 2,000 years ago or so and they are quite possibly amongst the most well-preserved ancient architectural structures we’ve ever come across.
The cave complex is essentially made up of five caverns in total and they are all quite phenomenal, to say the least as each and every one of them is said to be over a thousand square meters deep with total heights of up to 30 meters and area coverage of 30,000 square meters in total.
In order to construct it, as we do know it is actually artificial, there would be a need for over 1,000 workers that would have to work nonstop day and night for over six years to complete.
Despite the fact that this was most likely what happened back then we have no evidence of any humans having worked here in the first place which most likely points towards the original constructors being non-human in the first place.
This is believed to have been built by the ancient Anunnaki as they were the only ones around that time period with the technology needed to construct this in the first place.
They moved over 1,000,000 cubic meters of rock to essentially make way for this insane cavern system. The unimaginable effort that would need to be put in this is out of this world, to say the least.