The Roki Tunnel is a mountain tunnel of the Transkam road through the Greater Caucasus Mountains, north of the village Upper Roka. It is the only road joining North Ossetia–Alania in Russia into South Ossetia, a breakaway republic of Georgia. The road is manned at the town of Nizhny Zaramag in North Ossetia and is sometimes referred to as the Roki-Nizhny Zaramag border crossing.