Silbo Gomero (English: Gomeran Whistle), also known as "El Silbo", is a whistled language spoken by inhabitants of La Gomera in the Canary Islands to communicate across the deep ravines and narrow valleys (gullies) that radiate through the island [1]. A speaker of Silbo Gomero is sometimes referred to in Spanish as "un silbador".

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Guanches (also: Guanchis or Guanchetos), now extinct as a distinct people,[1] were the first known inhabitants of the Canary Islands, having migrated to the archipelago sometime between 1000 BCE and 100 BCE or perhaps earlier. Their culture as such has since disappeared, although traces of it can still be found, an example being the "whistle" Silbo language of La Gomera Island.