Accessing iCloud backup on Mac

I've located an iCloud back-up on my Mac via the 'system preferences > iCloud > Manage... > Backups' route, but how do I actually access this backup? It doesn't show up as a file on my Mac, or in my iCloud account, nor in my iTunes. I've tried setting up a phone using previous iCloud backups, but this specific backup also doesn't appear as an option when trying to set the phone up.

Is there any way to access it?