Underwater pyramid found ne Portugal .. The pyramid was found in an area of the mid-Atlantic that has been underwater for about 20,000 years. Considering this is around the time of the last ice age where glaciation was melting from its peak 2000 years prior, whatever civilization, human or not, that was around before the ice age, could be responsible for building the pyramid.
[Pyramids of Glass Submerged in the Bermuda Triangle] “These strange underwater pyramid structures at a depth of two thousand meters were identified with the help of a sonar according to oceanographer Dr. Verlag Meyer. Studies of other structures like Yonaguni in modern day Japan have allowed scientists to determine that the two giant pyramids, apparently made of something like a thick glass, are really impressive - each of them is larger than the pyramid of Cheops in Egypt.”
Yonaguni-Jima, Japan: Discovered by a dive tour guide some twenty years ago, controversies have arisen around a mysterious pyramids found off the coast of Japan. These structures seem to have been carved right out of bedrock in a teraforming process using tools previously thought unavailable to ancient cultures of the region.