Dr. Phil Weigand

In 1970 , American archaeologist Phil Weigand was visiting the Spa Corner , near the small town of Teuchitlán . At the pool, his wife , historian Acelia Garcia found an obsidian blade , that intrigued the couple. "Where did that come from ? " They wondered .

It turned out that the water park had been the site of an old workshop where countless knives and obsidian knives were produced . The couple then began hiking in the mountains just above the resort and ended up wandering among the ruins of the curious " round pyramids " now known as Los Guachimontones .

Later, Weigand recalled the moment : " I stood on the largest pyramid , I looked around and thought . ' This is unexpected " Turned out to be an understatement. Marriage Weigand aside a summer to explore the pyramids they had found and ended up spending the rest of their lives documenting a complex and highly organized society that had begun in western Mexico in the year 1000 BC and was over peak in 200 AC .