Chunking only applies to HMP terrains, not MDL terrains. However, with the flexibility of using MDL terrains, you can get faster rendering, greater flexibility in shape, and several more advantages. For holes in the ground, only MDL terrains support that.
"You level up the fastest and easiest if you do things at your own level and no higher or lower" - useful tip
My 2D game - release on Jun 13th; My tutorials
