doit

-- Variables for dimensions
local width = 5
local length = 5
local depth = 5

-- Function to dig a row
local function digRow()
    for i = 1, width - 1 do
        turtle.dig()
        turtle.forward()
    end
end

-- Function to return to the start of the row
local function returnToStartOfRow()
    turtle.turnLeft()
    turtle.turnLeft()
    for i = 1, width - 1 do
        turtle.forward()
    end
    turtle.turnLeft()
    turtle.turnLeft()
end

-- Function to move down a level
local function moveDown()
    turtle.digDown()
    turtle.down()
end

-- Main digging function
local function digPit()
    for d = 1, depth do
        for l = 1, length do
            digRow()
            if l < length then
                if l % 2 == 1 then
                    turtle.turnRight()
                    turtle.dig()
                    turtle.forward()
                    turtle.turnRight()
                else
                    turtle.turnLeft()
                    turtle.dig()
                    turtle.forward()
                    turtle.turnLeft()
                end
            end
        end

        -- Return to the starting position
        if length % 2 == 1 then
            returnToStartOfRow()
        else
            turtle.turnLeft()
            for i = 1, length - 1 do
                turtle.forward()
            end
            turtle.turnRight()
        end

        -- Move down to the next layer
        if d < depth then
            moveDown()
        end
    end
end

-- Start the digging process
digPit()