148 "... Tiahuanaco..." "Tiwanaku monumental architecture is characterized by large stones of exceptional workmanship. In contrast to the masonry style of the later Inca, Tiwanaku stone archi- tecture usually employs rectangular ashlar blocks laid in regular courses, and monumental structures were frequently fitted with elaborate drainage systems. Bronze or copper "double-T" clamps were often used to anchor large blocks in place. The stone used to build Tiwanaku was quarried and then transported 40 km or more to the city. They were moved without the aid of the wheel, though much of the distance was over water. The community grew to urban proportions (in antiquity) becoming an important regional power in the southern Andes. Satellite imaging was used recently to map the extent of fossilized suka kollus across the three primary valleys of Tiwanaku, arriving at population-carrying capacity estimates of anywhere between 285,000 and 1,482,000 people. They worshipped many gods, and one of the most important gods was Viracocha, the
