The site features large, finely cut stone blocks that fit together with incredible precision, some weighing up to 130 tons. Many of the stones have edges and surfaces that appear almost machine-cut, leading to theories about advanced ancient technology or extraterrestrial involvement.
The structure's layout includes massive terraces, gateways, and a series of megalithic stone walls, many of which show signs of unusual craftsmanship, such as precisely cut right angles and interlocking joints that seem to defy the techniques known to have been available to ancient civilizations.
While it is generally accepted that the Tiwanaku culture built Puma Punku between 500 and 600 CE, the exact methods used to construct these remarkable structures remain a mystery. Some experts suggest that Puma Punku served as a religious or ceremonial center, but its full purpose and the extent of its importance to the Tiwanaku culture are still subjects of debate. Despite the mystery, Puma Punku stands as a testament to the advanced engineering skills of the ancient peoples of the Andes.