Thankfully they are firmly attached with harnesses and ropes.
I don't think I could be a tree surgeon since I hate heights. I guess tree surgeons have different phobias.
This is the end result. The plane trees end up looking gnarled and impossibly bald but they soon sprout new shoots and branchlets.
In a few weeks the trees in the boulevard will be leafy and green again-which is really hard to imagine when the trees look so lifeless.
The palm trees get pruned too.
The huge spikes on the feet help with climbing and hanging on to the tree.
Even with the ropes and harnesses and other precautions, its still a bit creepy to watch the tree surgeons at work. I worry about people falling -even when I don't know them.