Children at school learning silbo gomero
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The schools where whistling in class is compulsory

Whistling is a compulsory subject at schools in the Canary Island of La Gomera.

It is part of an effort by locals to keep silbo gomero - the ancient whistling language used to communicate through the deep ravines and valleys - alive in the modern age.

BBC Mundo's Laura Plitt reports.

  • 11 Jan 2013
Go to next video: Blind busker Mark Campbell whistling