Boulder vs Eindhoven

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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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Eindhoven ( EYENT-hoh-vən, Dutch: [ˈɛintɦoːvə(n)] (listen)) is the fifth-largest city and a municipality of the Netherlands, located in the south of the country. It had a population of 231,469 in 2019, making it the largest city in the province of North Brabant. Eindhoven was originally located at the confluence of the Dommel and Gender.Neighbouring cities and towns include Son en Breugel, Nuenen, Geldrop-Mierlo, Helmond, Heeze-Leende, Waalre, Veldhoven, Eersel, Oirschot and Best.

The agglomeration has a population of 337,487. The metropolitan area consists of 419,045 inhabitants. The city region has a population of 753,426. The Brabantse Stedenrij combined metropolitan area has about two million inhabitants.

Source: Wikipedia