Simply Caterpillar mod adds a drill that makes 3×3 mineshafts for you. It is split off from Caterpillar mod, the gameplay based more on the original concept than what Caterpillar has become.
Some of the key differences between this and Caterpillar are that Simply Caterpillar:
The Drill (further angle)
The main gui
Simply Caterpillar Mod Download Links:
For Minecraft 1.9.4
For Minecraft 1.10.2