dig

local args = {...}

width = tonumber(args[1])
depth = tonumber(args[2])

for( i=0, width )
do
  for( j=0, depth )
  do
    while( turtle.detect() )
    do
      turtle.dig()
      turtle.drop()
      sleep(2)
    end

    turtle.forward()
  end

  turtle.turnLeft()
  turtle.turnLeft()

  for( j=0, depth )
  do
    turtle.forward()
  end

  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
end