A quick one this time.
A while ago I saw someone building a mini Yin Yang with [style b color=#2880b9]water [/style]and[style b color=#e74c3c] lava[/style]. I liked the idea and thought I would scale it up a bit.
Schematics for both 128 and 256 block diameter in the download.
Feel free to download and use them however you like, but please give credit if you do :)