You should check it out when it is time to go to that area in the story. That sky island is colorful with multiple different blocks. Some of the blocks are strangely slanted on top and some are half blocks, rectangles or triangles. Many of them are see-through and you fall right through them, which makes landing on the platform and walking on it tricky. Some of the blocks are liquid poison and lava that make you take damage. It is interesting.