Haha ive once done that with obsidian. Didn't take a screenshot unfortunately. It took like 1.5 hour :DWhaha whow what a wall...
Yeah you are a camper mate, but how many glass blocks? xD. Maybe the next time with obsidian blocks that would be nice man what a base! ;)
About 1-2 hours XDlol! How much time did it take you to do it? xD