Huge system file size CloudDocs Im on a MacBook Pro (15-inch, 2016) running 10.13.5 (Latest High Sierra )

Here is a screenshot of my storage tab :



As you can see the system takes quite a lot of space. After using an app called Grandperspective to get a more detailed view of disk allocation it seems I've got a folder named cloudDocs in Application Support That weighs around 80GB.

I'd like to point out that I have lately been freeing a lot of space on my mac in order to turn off the Icloud feature that helps saving space by uploading old files or files not used often to the cloud and removing them from the mac.

I believe this CloudDocs folder is a result of turning off this "space saving option" and the long download process that resulted.

What is that folder for? Can I delete it?

Thank you for your help

Alex

Ps : this is not an issue related to time machine local backups as I have already checked for those
/Users/[your username]/Library/Application Support/CloudDocs 


It is part of Apples iCloud service and will synchronize your Desktop and Documents folder with iCloud Drive. If you do want to store your Documents to iCloud this folder is required and iCloud Drive needs to be enabled.