Dave Coleman is an arborist based in Australia. He fells trees at incredible heights – usually at around 70 metres.
He rigs ropes to the trunks and branches to make sure they don't hit houses when they fall to the ground.
All the trees are in the Dandenong Ranges in Victoria. Some of those, the Eucalyptus Regnans, are the tallest in Australia.
Produced by Claudia Romeo