British explorers map out 'never-ending' cave network underneath Borneo jungle
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' F& `- V/ k8 R1 FMaking a splash: Expedition leader Tim Allen inspects the 'Shower Head' - a calcium-formed funnel which transports rain water from the surface into caves underneath Gunung Mulu National Park, in Sarawak, Borneotvb now,tvbnow,bttvb }6 n3 ~5 y0 S- Z5 |2 t
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Leaving a mark: Andy Eavis compares his hand size to ancient prints left in Black Hands Cave |