Tumangang
Tumangang is a neighbourhood of Sonbong ward in Rason, North Korea, near the China–North Korea–Russia tripoint where the three countries meet. It is located across the homonymous Tumen River from the Russian settlement of Khasan and the Chinese village of Fangchuan. The Korea Russia Friendship Bridge connects Tumangang and Khasan and is the sole crossing point on the long North Korea–Russia border. Trains coming from and going to Russia are handled by Tumangang station.