Not quite underground

mikem

Well-known member
But crawling through a fallen rainforest tree & SRT in a standing one, from 33 mins (earlier in the programme Steve Backshall is climbing the Guyanan tepui, but none of the caving footage in this show):
https://www.bbc.co.uk/iplayer/episode/m000wvxh/our-wild-adventures-series-1-4-rainforests
 
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