Borderlands 2: Ultimate Upgrade 2 DLC, Fastest way to 72

So if youre reading the description, somewhere in the video it says that we farmed the dragon raid boss all the way from 61 to 72. It is by far the easiest way to make it there the fastest because it only took us a 2 days to get there. Also, this area is part of the newest DLC content and it includes basically the training grounds for sanctuary and has digitalized enemies that you can fight off for about 20 minutes.