Scattered all around Lake Titicaca you’ll find chullpas, gargantuan white-stone towers up to 10m in height in which the ancient Colla tribe, who dominated the region before the Incas, buried their dead. Some of the most spectacular are at SILLUSTANI, set on a little peninsula in Lake Umayo overlooking Titicaca, 30km northwest of Puno. This ancient temple/cemetery consists of a ring of stones more than five hundred years old – some of which have been tumbled by earthquakes or, more recently, by tomb robbers intent on stealing the rich goods (ceramics, jewellery and a few weapons) buried with important mummies. Two styles predominate at this site: the honeycomb chullpas and those whose superb stonework was influenced by the advance of the Inca Empire. The former are set aside from the rest and characterized by large stone slabs around a central core; some of them are carved, but most are simply plastered with white mud and small stones. The later, Inca-type stonework is more complicated and in some cases you can see the elaborate corner-jointing typical of Cusco masonry.