Digging.
Ability Score(s): Power
Usage: Hewing is used for digging ditches as well as holes and the like. Digging requires a check versus a set DC by the ground type being dug as well as how long the digging takes.
You can dig a number of squares equal to 1 + half of your Power.
Digging dirt or similar surfaces is a DC 25 and takes 20 minutes.
Digging gravel or similar surfaces is a DC 35 and takes 40 minutes.
Digging stone or similar surfaces is a DC 50 and takes 80 minutes.
The amount of time the character takes digging can be reduced by 5 for every 5 points the character gets over the listed DC (to a minimum of 5 minutes).