Stone shape can affect an amount of stone up to 10 cubic feet + 1 cubic foot per level. If the shape you want to effect is narrow enough, you could get a lot of distance while staying under this volume. For example, a 10th level caster has a maximum of 100 cu. ft. Could such a caster touch the side of a mountain and bore an 8,000-foot-long hole through it if the hole was only 1.5 inches in diameter? The volume of this hole would be π(0.06252²)(8000) = ~98 cu. ft.³. What about reshaping a 4.5-foot cube of stone into a cylinder of similar dimensions?