Not really sure how to describe this terrain, more like a volcanic wasteland of sorts, but Badlands sounds cool. Trees are scarce and tend to burn up quickly in lava. I was looking through some old files and decided to share, hopefully someone will enjoy it
You need to manually set the biome to Stone Beach (25) after entering the preset, otherwise it will become Birch Forest (27). Alternatively, change "fixedBiome":23 to 21 before pasting in the preset (to make matters more confusing, the biome IDs in the Customized preset are two less than the actual IDs when FrozenOcean or higher are selected, so 23 is Stone Beach, then the game adds two more to get 25, which is actually biome ID 27. This is because the Nether and End are skipped but the numbers used by Customized are consecutive).