Code

print("How far?")
dist= (read())
for i = 1, dist do
             turtle.up()
             turtle.up()
             turtle.up()
             turtle.dig()
             turtle.forward()
             turtle.digDown()
             turtle.down()
             turtle.digDown()
             turtle.down()
             turtle.digDown()
             turtle.down()
             turtle.digDown()
             turtle.down()
end