User blog comment:Mrob27/Cursed Items/@comment-4501235-20111108201120/@comment-4501235-20120417221426

Wow, it's been over a week since I've been on the wiki!

I'm not sure how you got the impression that I didn't know how to use a drill or why you needed me to answer a question that you could so easily answer yourself. Just drill straight down and see what happens. Obsideon has give you a nice simple answer.

But if you want specifics here they are: If you  are standing at sea level (on the surface of the ice) and you can drill directly below you and decend 64 blocks deep. Once you have reached that depth you can continue drilling and collecting rock, but you will not drop any deeper. You can prove this for yourself by drilling one block beside you and then continue drill down, you'll remain at the same level.

No you cannot drop through the moon, but I have been trapped in the bottom block a few times, but that's another story and not something I'd recommend.