This is a small mod I created because I was bored. It adds a dimension with 7 new mobs, 4 new biomes and 4 new dungeons. Also 2 new types of wood.
Every dungeon except the last one has a key. The three keys are used to get into the last one.
Now how to make a portal:
First you will need Jungle Bricks
Then you will need a Golden Fire Charge
And to get into the dimension you will need to make a netherportal-like structure from jungle bricks.
Instead of flint and steel you need to use the golden fire charge.