I decided to have a little adventure with TNT in Minecraft. I dug far away from my large mine that reaches the bedrock, and made a 10x10x2 little room, and filled it entirely with TNT.
This was the outcome:
(http://img695.imageshack.us/img695/4723/mcmineaftermath10x10x2.jpg)
Mind you, that's just 10x10x20 TNT blocks at the bedrock, that isn't much.
So then, I decided to go further, dug up a bit more just above this cave I made, then dug yet again REALLY far out.
I made a 10x9x4 cave this time, and filled it all with TNT.
This time, the TNT was fairly far above the bedrock.
This was the outcome:
(http://img213.imageshack.us/img213/1390/mcmineaftermath1.jpg)
The cave is actually MUCH larger, much higher up, but that's the best I could do in one image.
The image is looking towards the entrance to my man-made cave.
Now that's not all, while looking through my caves and mining the coal, iron, gold, etc that I could find, I found a couple of funny things.
First of all, in my first cave I find this:
(http://img88.imageshack.us/img88/2328/89210327.jpg)
A skeleton archer managed to either fall into that pit under the bedrock(it was pretty large, and there's no way back out of it [I went in it]) or it spawned under there. Either way, bonus for me cause there's no way it's getting out of there.
Next:
In the large cave I found even more lulzy things.
First off, while I was making bridges at the top of my cave to light up the cave with torches, I found a few stranded creepers.
Here's one of them:
http://img805.imageshack.us/img805/1232/sadcreeper.jpg
I found a couple of them like that, just hanging to the cliff of the cave at the very top. Mind you, this was literally RIGHT after I blew it up. Within like a minute, shit tons of creepers were spawning all over the cave. Luckily for me, most spawned near the top like this guy, and fell to their deaths.
Next, I found an entrance to a REALLY large cave here, with many many tunnels.
Minecraft decided to troll itself.
Many times.
http://img210.imageshack.us/img210/421/problemminecraft.jpg
(http://img706.imageshack.us/img706/5269/98560806.jpg)
And last but not least;
(http://img684.imageshack.us/img684/3829/iloveyouminecraft.jpg)
Minecraft made it's own natural mob trap. 5 enemies were there at that moment. I managed to get 3 more in :3.
And finally; I nearly shat my pants here:
(http://img709.imageshack.us/img709/3996/thiscouldbeaproblem.jpg)
(Note that I ran out of apples and almost armor, and creeper is right in front of me about to blow up.