system
A chat on 4chan
human
The second I recall are the Pre-Cursors to the Mayans and Aztecs. 

Now this one is a little fucked up I don't know the chronological order of this, but at some point before or after Jared made his arrival, things got hijacked by a bunch of Reptilians. I want to say he came after and cleaned it up, but I may be wrong. So.

It goes that After the flood, while things were in motion of being reset, there was a Reptilian ship that crash landed on earth, now this wasn't the first time, allegedly, but it was the first time they landed as, how do I say this, not demi-gods? Now During Atlantis and Prior, their were Animal-Human-God Hybrid things, that were cool a ya know, and Reptilians were and always have been the 'evil' manifestation of Satan, Azazel, Azriel, Devil, whatever. It's his preference, GOD prefers Humans, whatever. 

So the Reptilians set up bases and essentially enslaved all the remaining surviving, Atlanteans, Hyperboreans, Lumerians, Muanians, etc. Which pretty much were just the outer lying outposts and villages, as most of the cities were destroyed by the Flood and the Meteor Strikes, and some of their own Doing. So basically just your lowly, low-energy, almost primitive people.

Well a group of these people were located in Central America, and they were actually fond of Reptilians, I believe his name was p'tah, or the sort. He is described in Ancient Egyptian texts, and was known during the Atlantean times as being a great friend of the Human Race. He actually was allowed to settle an outpost in Central American during Atlantean times, and did great things, but eventually was overrun by his own Reptilian kind. 

So they ended up actually not being afraid of the newly landed Reptilians from Space, and bowed to them in servitude thinking it was p'tah returning or the sorts, and knowing how GOD made all beings equal, the dumbass new Reptilians became infatuated with their newly acquired 'groupies' that they became ignorant, stupid and fat.
gpt
So back to the Aztec/Mayans, A lot of the architecture and such was made during the Atlantean times and has been repurposed by the following civilizations. I am sure there are remnants of two different styles of advanced structural building. Human and Reptilian. Allegedly, there was a 'demonic' Reptilian sect that used these pools for channeling inter dimensional Reptilians, which are literal Demons. But that is merely a legend that only they would know of. I am 100% sure there a left over reptilians in two locations on earth, the jungles and caves of Central American and South China.