It's s2 at the beginning (coming from the south) and you have to carry the wheel over a small cairn. In the middle it is not passable (partly maybe even s5) and the railing is so narrow that the handlebars just fit through. At the end there is a stony path s2 (possibly also s3), which is fun. All in all, it is difficult to get the bike carried over the obstacles alone, better in pairs. Middle part not passable. View is awesome.