Across the railway line southwest of the Tiwanaku site, you’ll see the excavation site of Puma Punku. In this temple area megaliths weighing more than 130 tons have been discovered. Like Kalasasaya and Akapana, there is evidence that Puma Punku was begun with one type of material and finished with another; part was constructed of enormous sandstone blocks and, during a later phase of construction, notched and jointed basalt blocks were added.
Note also, in the distance of the site’s northern boundary, the sukakollo , a highly sophisticated system of terraced irrigation.
