Air as top and filler blocks, tall grass, flowers.
Air as top and filler blocks.
The void biome was made when MCE wondered what a biome would look like if the top and filler blocks were air. He saw it and kept it in the mod. With the top and filler blocks being air, lakes and water from rivers generate weirdly. Also, this biome doesn't smoothly go into the next biome nicely, but still looks cool.
With the top and filler blocks both being air, it looks like this biome sank down a bit. However, water still generates at the same height, and looks weird when it does. Tall grass and flowers can still generate on the few patches of dirt that spawn. This biome doesn't smoothly go into the next biome, because of the top and filler block, yet it looks cool.
There is no color set to this biome. Lakes can generate as well as tall grass and flower. However, trees do not.