They were by historical accounts anyway known to be peaceful people.  Here is more information on this region from wikipedia:

It is not actually a military fortification, but it is generally considered a pre-Columbian religious site, built by the Chané people, a pre-Inca culture of Arawak origin.^[2] There are also ruins of an Inca city built near the temple; the city was built during the Inca expansion to the southeast. Both Incas and Chanes suffered several raids from Guarani warriors who invaded the region from time to time. Eventually, the Guarani warriors conquered the plains and valleys of Santa Cruz and destroyed Samaipata. The Guaranis dominated the region well into the Spanish colonial period.^[2]

What do you think are the current theories correct or false?  Was this made by the Chane people or perhaps it was in part made by another culture or civilization?

Feel free to comment with your ideas and check back for updates as they come in.

thanks to hiddenincatours.com for the great info