The Alien colony

This is a very large mushroom biome. On it you'll find a domed colony and more than a few surprises.
Buoys mark the offshore path to a water temple and the next large Biome.

Survival Map (cheats enabled)

The colony features:
60(ish) block high, working up/down piston elevator(with call button)
Auto smelting furnace
Nether portal that can be turned on and off
Timed piston Bunker doors guard the nether portal
Runway lights with on/off and cycling mode
Fully loaded Fireworks display with nearly an hour on play time
Street lights are automatic (on at sunset, off at sunrise)
Full Spawn village in main dome
Livestock dome with auto egg catch and some rather unusual sheep
Small forest dome to harvest charcoal to power the furnaces
The fully refit and rebuilt Serenity (I comepletely overhauled my design)
Command Block control of Day/Night and Downfall on/off