while table.pack(gps.locate(5))[3] ~= -147 do
    if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
        turtle.refuel()
    end

    success, data = turtle.inspectUp()

    index = 0

    while success and (data.name ~= "minecraft:air") do
        turtle.digUp()
        turtle.up()
    index = index + 1
        success, data = turtle.inspect()
    end

    if table.pack(turtle.inspect())[2].name ~= "minecraft:air" then
        turtle.dig()
    end

    turtle.forward()

    if index ~= 0 then
        for i = 0, index - 1, 1 do
            turtle.digDown()
        turtle.down()
        end
    end

    print('moved foward')
end