Spotted by a reader in the UK, a man using an excavator arm to work at height.
The man looks to have a chimney probe or some such device. He has probably been lifted on the bucket and is now leaning back against the wall while he figures his order of work.
In addition to the risk of falling our man risks get pinched or crushed n the moving booms, and this is hardly the most cost effective form of access.
Definitely one for our Death Wish series