Oasis. An oasis is a "desert island", an area of fertile irrigated land in a vast sea of desert. At its heart an ancient spring of water bubbles from the sands of the Sahara. Some animals are permanent castaways at the oasis, while others travel many miles to seek out the precious water, like the tribesmen with their goats and camels, and millions of migrant birds who pause on their journey to feed and nest.
Narrated by David Attenborough. Producer Dilys Breese
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