Boulder vs Volgograd

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In geology, a boulder is a rock fragment with size greater than 256 millimetres (10.1 in) in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks (American English) or stones (In British English a rock is larger than a boulder). The word boulder is short for boulder stone, from Middle English bulderston or Swedish bullersten.In places covered by ice sheets during Ice Ages, such as Scandinavia, northern North America, and Siberia, glacial erratics are common. Erratics are boulders picked up by ice sheets during their advance, and deposited when they melt.

They are called "erratic" because they typically are of a different rock type than the bedrock on which they are deposited. One of them is used as the pedestal of the Bronze Horseman in Saint Petersburg, Russia. Some noted rock formations involve giant boulders exposed by erosion, such as the Devil's Marbles in Australia's Northern Territory, the Horeke basalts in New Zealand, where an entire valley contains only boulders, and The Baths on the island of Virgin Gorda in the British Virgin Islands. Boulder-sized clasts are found in some sedimentary rocks, such as coarse conglomerate and boulder clay. The climbing of large boulders is called bouldering.

Source: Wikipedia

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Volgograd (Russian: Волгогра́д, IPA: [vəɫɡɐˈɡrat] (listen)), formerly Tsaritsyn (Цари́цын) (1589–1925), and Stalingrad (Сталингра́д) (1925–1961), is the largest city and the administrative centre of Volgograd Oblast, Russia. The city lies on the western bank of the Volga, covering an area of 859.4 square kilometres (331.8 square miles), with a population of over 1 million residents. Volgograd is the fifteenth-largest city in Russia, the second-largest city on the Southern Federal District, and the fourth-largest city on the Volga. The city was founded as the fortress of Tsaritsyn in 1589. By the nineteenth century, Tsaritsyn became an important river-port and commercial centre, leading to its population expanding rapidly. During the Russian Civil War, Tsaritsyn came under Soviet control. On April 10, 1925, the city was renamed Stalingrad in honor of Joseph Stalin.

During World War II, the Axis forces attacked the city, leading to the Battle of Stalingrad, one of the largest and bloodiest battles in the history of warfare. On 10 November 1961, Nikita Khrushchev's administration changed the name of the city to Volgograd. After the dissolution of the Soviet Union, the city became the administrative centre of Volgograd Oblast. Known locally as the "Hero City", Volgograd today is the site of The Motherland Calls, an 85-meter high statue dedicated to the heroes of the battle, which is the tallest statue in Europe, as well as the tallest statue of a woman in the world. The city has many tourist attractions, such as museums, sandy beaches, and a self-propelled floating church. Volgograd was one of the host cities of the 2018 FIFA World Cup.

Source: Wikipedia