Hey guys, it's Ultra here! :D

Today I bring you Drop the Base. A complex underground base involving much creativity, and some redstone. And a spare weekend. And a want to play Minecraft after being put off by the only server I ever liked going shit.

Never the less, here's an explanation (note that it may be confusing, so I recommend going through the pictures I uploaded):
First up is the entrance. The entrance is a stone floor in a little hollowed out hill. Break the block under you to drop into the base, and the stone floor will repair itself once you're down. Note there are instructions on signs on the wall too that explain everything. Next, there are three redstone doors. The one on the left leads to an exit mechanism that will blow you through the roof. In-depth info resides along the walls of the room. The next door leads into a two-way tunnel. The first tunnelway leads to the paradise room. It's a little forest in a room, complete with trees and a river leading out of the wall. There is a hill in the corner with a trapdoor on top. Under the trap door is a ladder that leads into a Nether room. The Nether room is a small replica of the nether, and Nether mobs even spawn in there! The other tunnelway is a dead end, but walking around the corner will teleport you to the End. The third and final door is a tunnelway to the loungeroom. The loungeroom roof is a display of water and lava behind glass, and forward is a long couch complete with a footrest, two tables (one of which has a cake), and an enormous widescreen TV. To the right is a small doorway (no redstone involved here) which leads to some chests full of various gear.

That's about it, so enjoy! ;P

Additional Notes

PLEASE READ:
THE EXIT KEEPS BREAKING, I WILL FIX IT WHEN I CAN.