The first picture released by Notch, showing how Hell will look like.
Hell is part of the Minecraft Halloween Update. Not much is known about it; only these things are sure:
• Used for fast travel (More about this in the section below).
• Much more dangerous than normal Minecraft landscapes (higher mob spawning rate, special mobs).
• The only way to get in or out of it is by using portals, players can't just mine straight down and hit hell.
New block types
There are at least 5 new block types in Hell. Only two are currently known:
- Hell dirt (The Word of Notch)
- Infinite fire source (Notch's Twitter)
Other block types are visible in the picture released by notch, visible to the right of this page.
Fast Travel and Portals
Notch hasn't revealed a lot about the portals yet, but he gave us a vague idea of how it works. This quote is taken from the Halloween Update announcement:
"Portal in, move ten meters, portal out, and you're hundreds of meters away."