Bedrock Prison
Bedrock Prison is the home of griefers, trolls and hackers, in other words the worst players in Minecraftia. No one has ever escaped from this fortress, for three reasons. The material it is made of, its location and its guards.
After the reopening of the Deep Core under Stoneholm, bedrock was mined once again. The dwarfs began to research ways off making tools and armour out of it, while the Shiplords asked for some to make boats. But the Skylords saw that the world was filling up with evil, and they made a plan, which they put forwards at the next Meeting of the Races. The plan was to build a prison from bedrock, and fill it with all the bad players, who would not be able to dig their way out. All the races agreed, and a location to build it was searched for. It was found.
Nether Valley is a valley in the Overworld, were lava sources in the side of the valley, pour down to the glen below. A single large island is above the lava, and that is were Bedrock was built. The Shiplord's new obsidian ships were used to move across the lava, and the Dwarf taskforce took less then twelve months to build it, even with griefing attacks. The final thing was the guards.
Cross breeding had lead to the creation of EnderHybrids, half endermen, half men. With the mind of men, and the teleportation skills of endermen they were not to be trifled with. They stay out of the prisoners way, until trouble starts when they blink to the culprits. They are taken to solitary confinement, in the dark, with no sound. Many are driven mad.
While many people sleep easy knowing that all the trolls are behind bedrock bars, many people think that it is too cruel. Trapped behind unbreakable walls, watched all the time, anyone would go mad in days. Some people fear that if a dark power rises, and takes Bedrock, no one will be able to defeat him inside it. We will have to see if that happens however.