A recreation of the Canyon biome.
The amazing Canyons were removed from Biomes O' Plenty in version 1.8.9. This mod brings them back in all their glory.
The mod contains both the regular Canyon biome, as well as the Canyon Ravine biome. It re-adds Hardened Dirt and Pine Trees to make the Canyons complete.
This is a standalone mod and does not require Biomes O' Plenty to be installed, but will work with it of course.