Love the ancient mysteries.
If you'd allow me to be a Captain Here.
A fascinating decoding of the Nazca lines, which then brings up more questions as to who and how:
The calendar being represented as Mayan, is in fact the Aztec calendar which is on display at the National Museum of Anthropology and History in Mexico City. https://www.flickr.com/photos/k6mmc/2176537668
The Mayan calendar would look like this: 
Edgar Cayce readings described Atlantis as a continent, where the Atlantic Ocean is today, before it began to be broken up into islands as a result of floods caused by the misuse of their crystal energy source. This process occurred over a span of 200,000 years. As an interesting aside, that same crystal energy source, still underwater in the Bahamas, is the cause of the Bermuda Triangle anomalies.
The Norse were also in North America at least thousand years ago, but probably more.
Very informative post..like it
Thank you!