The “magnetic hill” is located on the Leh-Kargil-Baltik national highway, about 30 km from Leh, at a height of 14,000 feet above sea level. On its eastern side, flows the Sindhu, which originates in Tibet and goes to Pakistan. The hill is supposed to have magnetic properties strong enough to pull cars uphill and force passing aircraft to increase their altitude in order to escape magnetic interference; in reality, the effect is an optical illusion created by the gravity hill. The local administration has marked the spot by putting up a billboard near the hill. The Indian Army maintains a Sikh Gurudwara near the hill where Guru Nanak Dev, the first of the Ten Gurus of Sikhism, meditated in the 15th century. Due to both the Gurudwara and the gravity hill, the area has become a popular sightseeing destination.