The narrow valley of the Galwan River as it flows through the Karakoram mountains has been a flashpoint between China and India in their border dispute. In 1962, a forward post set up by India in the upper reaches of the Galwan Valley caused an "apogee of tension" between the two countries. China attacked and eliminated the post in the 1962 war, reaching its 1960 claim line. In 2020, China attempted to advance further in the Galwan Valley, leading to a bloody clash on 16 June 2020.