I'm so much saddened after looking at the below video. It feels so insulting not just for the trees but for nature too. What a clear meaning of "creation in years, destruction in seconds". The person operating the machine may not have imagined how long it has taken for the most-generous species on the planet to grow this big. However, he or the owner of the operations are not the only criminals of nature. We are more contributors to this destruction than them. The following line may help explaining what I want to say — "when buying stops, killing too will".
I hope the following video creates some pain in our hearts, so that we start acting for conserving the beautiful environment on this wonderful planet, rather than appreciating the capabilities of this machine.
Source: I received an email with this video