Magma Castle

The Magma Castle is actually the front-right castle on Bowser's Castle in Yoshi's Story. This is the hardest of the castle levels, and it is where lava is transported through Bowser's Castle. It is also the storage facility, as many rare creatures are located her such as Spikes, Puffers, and even a Red Yoshi Dragon! A Slug also thrives in the depths of the tower.