The End is a location that represents the End Dimension in normal Minecraft.
Like the normal End Dimension, it is home to Enderman and the Ender Dragon. But unlike the Vanilla end, there are also Custom mobs called the Obsidian Defender and the Watcher.
The End can be accessed from Spider's Den on the west side via use of the Launch Pad. Players must have Combat level XII unlocked in order to access The End.
The end has Enderman all throughout the end. When End Stone is mined or when ender pearls are used, there is a small chance an Endermite will spawn.
In the Dragon's Nest, Zealots, Obsidian Defenders and Watchers spawn. Endermites also spawn naturally.
There are 3 main resources found in the end - Obsidian, End Stone and Ender Pearls.
Obsidian and End Stone can be obtained from mining, and Ender Pearls will drop from slain Enderman.
There are also Glowing Blocks that can be found which drop additional resources.
Pearl Dealer - Has a shop outside the spawn platform featuring Enchanted Books, End Stone, Obsidian, Remnant of the Eye, Stonk and Silent Pearls.
Guber - Provides a racing quest from one side of the island to the other.
The Dragon's Nest is the boss room in The End with the entrance, a large gate, located near the bottom of the caves. When 8 Summoning Eyes are used on the alter in the center, the Dragon spawns.
As of update 0.7, the Dragon's Nest is the most difficult location in Skyblock. It's recommended to have at least 400 Defense as the mobs are extremely difficult.