birds nest collectors climbing poles in natural cave (borneo)


birds nest collectors climbing poles in natural cave (borneo), birds-nest, caving, niah, niah caves, pole, spelunking, wooden

Wooden pole hanging from the roof of a natural cave (Borneo).­

Those poles are (or were) used by birds-nest collectors to climb and harvest the birds-nests.­ The poles are formed of several segments , connected together by wood plugs.­

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The Niah Caves (Borneo) Borneo