The Uru use bundles of dried
Totora reeds to make
reed boats (
balsas), and to make the islands themselves. The larger islands house about ten families, while smaller ones, only about thirty meters wide, house only two or three families. The islets are made of multiple natural layers harvested in Lake Titicaca. The base is made of large pallets of floating
totora roots, which are tied together with ropes and covered in multiple layers of totora reeds. These dense roots that the plants develop and interweave form a natural layer called
khili (about one to two meters thick), which are the main flotation and stability devices of the islands. Each floating block of khili measures approximately . The blocks used to be harvested with eucalyptus wedges, but are now sourced using long metal saws custom made for this purpose. They are anchored with ropes attached to large
eucalyptus poles driven into the bottom of the lake. Once the khili pallets are tied together and anchored, multiple layers of cut reeds are added. The bottom layer of covering reeds rot away fairly quickly, so new reeds are added to the top constantly, about every two weeks to three months depending on weather. Tourism via boats from
Puno has become the primary financial income for people living on the islands. The Uru's islands are located at above sea level, and just five kilometers east from the Puno port. Around 2,000 descendants of the Uru were counted in the 1997 census, although only a few hundred still live on and maintain the islands; most have moved to the mainland. The Uru also bury their dead on the mainland in special cemeteries. to grind Quinoa. Food is classically cooked in pots on pottery stoves; these are placed on flat stones to prevent the flammable reed islands from catching fire. To relieve themselves, tiny "outhouse" islands are placed near the main islands with simple toilets installed in them. The ground root absorbs the waste. Most islands feature a standardized shower building with tile roofs, water heating cells and a hot water boiler to allow for warm showers. Houses on the floating islands are mostly made of reeds too; some have corrugated metal roofs. Few are insulated. All houses are built on top of an extra layer of dry reeds to prevent
rheumatism. ==Traditional lifestyle==