章 537: Chapter 537, Discovery! The Mayan civilization!

“These structures are beyond my expectations.”

“They’re not just digging down. From the very beginning, they’ve planned it out and are building it bit by bit.”

“They’re building an underground city!”

Ning Fei looked at the hard stone slabs on both sides and the stairs that led down as he spoke softly.

His voice was very soft, but it was like a clap of thunder that exploded in the ears of the netizens!

[ F * ck, it can’t be. Thousands of years ago, the Mayans built an underground city here? ]

[ why didn’t they build a city on a nice island, why did they run underground? ]

[ that’s right, the Mayan civilization originated from the rainforest. Logically speaking, they are most suited to the environment of the rainforest. ]

[ but there are no traces of cities on the island. ]

[ that’s Strange! ]

[ what are they running away from! ]