You need at least a Nightmare Pickaxe or a Deathbringer Pickaxe. Both require you to defeat the boss in that world's corrupted area, either the Eater of Worlds in The Corruption, or the Brain of Cthuhlu in The Crimson. Beating these will give you the necessary crafting materials for the relevant pickaxe.
No. Any explosions, no matter TNT or creeper, can destroy obsidian
A shovel is the best tool to dig ditches with.
if you are talking about the black square it is called obsidian and you dig a 1x4 hole that is 1 deep and you fill it with obsidian and on the edges you build up 4 with obsidian and fill in the top 2 blocks and strike flint in the bottom corner
Try herobrine and dig near the lava or cobblestone you might have to have a capital H
shovel or backhoe
find it in a cave
Obsidian is molten silica (read sand) which has cooled rapidly after a volcanic eruption into brittle glass and is the reason why it chips easily into blades. Iron and magnesium give obsidian its dark color.
The spade is the digger tool.... you dig a hole in the ground with it.
*If you need any extra help, talk to Welcome Willy in the cabin*There should be a rock on the top of Welcome Isle. To get the treasure, you must dig. To dig, click on the picture of the tool to the right of the chat box. Then click "Dig." Dig around the area of the rock and you should be able to find the treasure.
use the underground tool at dig at the walls till u find one
iron pic axe or gold anything else it will mine it you just wont get it
the same reson it dosent need a brain, because all it has to do is dig, dig, dig