British explorers map out 'never-ending' cave network underneath Borneo jungleos.tvboxnow.com r3 W6 s: ~5 ~/ w2 |6 L" [1 F
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Making 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,bttvb1 B) e2 t2 Z. j% r6 X" w9 g
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Leaving a mark: Andy Eavis compares his hand size to ancient prints left in Black Hands Cave |