If you like big red mushrooms, you will certainly like this seed. You spawn in a jungle biome, but turn to the left and you will see a biome with huge red mushrooms. Besides that the mushrooms themselves are massive, the biome in which they spawn are also very big. When you get closer, you meet lots of mushroom cows as an added bonus.
The biome is made of lots of small and medium sized islands made of stone and huge mushrooms. Both red and brown mushrooms can be seen here.
World Type: Default.
X:-261,5 Y:102 Z:36,5
This seed was last tested and working with Minecraft version 1.6.2.
Screenshots from the huge mushroom biome seed.
Besides the mushrooms, the biome has some pretty cool formations of some of the mountains.
If you find any good locations in this seed, please leave a comment below so other can enjoy too.