North Duolei Penan people laugh, green peaks no ladder heard the cuckoo.

北人堕泪南人笑，青嶂无梯闻杜鹃。

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With the loss of their land, the Penan fear they will lose their independence.

BBC: The tribe saving Borneo's forests

Today only a handful of the 10, 000 to 12, 000 remaining Penan are genuinely nomadic, with the majority living in villages.

BBC: The tribe saving Borneo's forests

Unga, a Penan tribesman, told me that the logging companies were "destroying the way of the Penans' life".

BBC: News - Today - Borneo tribe fights for survival