Oasis
Narrated by David Attenborough
An oasis is a 'desert island', an island of fertile irrigated land in a vast sea of desert. At its heart a spring of ancient water bubbles from the sands of the Sahara, making life possible for men and animals alike. Some animals are permanent castaways at the oasis - the highly venomous homed viper, energetic marsh frogs, the rare and delightful desert sparrow.
Others, like the tribesmen with their flocks of goats and camels travel many miles to seek out the precious water. In spring and autumn millions of migrant birds pause to feed and rest in the shade of palm trees. Photography MIKE HERD Film editor ALAN HOIDA Producer DILYS BREESE
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