Mount Elbrus is the highest mountain in Russia. It is a dormant stratovolcano rising 5,642 m (18,510 ft) above sea level, and is the highest volcano in the supercontinent of Eurasia, as well as the tenth-most prominent peak in the world. Elbrus is situated in the northwest of the Caucasus, 100 kilometres from the Black Sea and 370 kilometres from the Caspian Sea. It rises 5,642 metres above the sea level. Located eleven kilometres north of the Greater Caucasus Watershed, marking the border with Georgia, it is on the border of the Russian republics of Kabardino-Balkaria and Karachay-Cherkessia. It is the highest peak in both Russia and Europe. Elbrus has two summits, both of which are dormant volcanic domes. The taller, western summit is 5,642 metres (18,510 ft);[2] the eastern summit is 5,621 metres (18,442 ft). The earliest recorded ascent of the eastern summit was on 10 July 1829 by a Circassian man named Khillar Khashirov, and the western summit in 1874 by a British expedition led by F. Crauford Grove and including Frederick Gardner, Horace Walker and the Swiss guide Peter Knubel. The normal route, on the southern slope is the safest and the fastest. At an hour and a half walk, at an altitude of 4,157 metres, is the Diesel refuge, offering 50 places and built in 2001 on the site of the former refuge of the 11 accidentally burned down on Aug 16, 1998. After an additional two hours of walking, the normal route passes close to the Pastoukhov rocks, which can be reached by a snowmobile. The rest of the ascent to the two main peaks can only be done on foot in about six hours. The route is well signposted; but it can be risky to go more than fifty meters from it because of the few crevasses or in the event of being ill-equipped.