"And then, why was he always called 'Uncle Alp'?"
Mountain pasture in the Bernese Oberland, Switzerland
Creative Commons Attribution Share AlikeMountain pasture in the Bernese Oberland, Switzerland - Credit: Kim Hansen

Heidi has been translated from the original German into many other languages. It has been translated more than once into English, and different translators have used different words and phrases. In some versions of  Heidi, 'Uncle Alp' is called 'Alm-Uncle'.

Both 'alp' and 'alm' are German words for high mountain pastures where animals are taken to graze in the summer.