Step 1: Walk around and try to acomplish something Step 2: Rapid click some blocks Step 3: Find out that you have to click and hold Step 4: Realize its already dark out Step 5: Dig down 3 blocks and cover the top
LOL, I had to go into photoshop and increase the lighting in the pic because it was way too dark, but like what Glampkoo said, it's just a floating island. Although I did think it could have been real at first, since it was really dark.