The Uros use dried totora reeds to make reed boats, and to make the islands for themselves. The totora reeds also is for the diet and medicine.
https://en.wikipedia.org/wiki/Uru_people
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Uros Floating Island, Lake Titicaca, Peru
ISRC: USUAN1100138 - Netherworld Shanty
"Netherworld Shanty" Kevin MacLeod (incompetech.com)
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