-- Function to mine a single row
function mineRow(length)
    if length == 0 then
        return
    else
        -- Mine the block in front
        turtle.dig()
        -- Move forward
        if turtle.forward() then
            -- Recursively mine the next block
            mineRow(length - 1)
        end
    end
end

-- Function to mine the entire field
function mineField(width, depth)
    if depth == 0 then
        return
    else
        -- Mine a single row
        mineRow(width)
        -- Turn around
        turtle.turnRight()
        turtle.turnRight()
        -- Go back to the start of the row
        for i=1, width do
            turtle.forward()
        end
        -- Position for the next row
        turtle.turnRight()
        if turtle.forward() then
            turtle.turnRight()
            -- Recursively mine the next layer
            mineField(width, depth - 1)
        else
            -- If we can't move forward, we've hit an obstacle or the edge of the field
            print("Unable to move to the next row.")
            return
        end
    end
end

-- Start mining the field
mineField(6, 6)