Roermond vs Boulder

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Roermond (Dutch pronunciation: [ruːrˈmɔnt] (listen); Limburgish: Remunj) is a city, a municipality, and a diocese in the southeastern part of the Netherlands. Roermond is an historically important town, on the lower Roer at the east bank of the Meuse river. It received town rights in 1231. Roermond town centre has been designated as a conservation area. Through the centuries the town has filled the role of commercial centre, principal town in the duchy of Guelders and since 1559 it has served as the seat of the Roman Catholic Diocese of Roermond.

The skyline of the historic town is dominated by the towers of its two churches: St. Christopher Cathedral and Roermond Minster or 'Munsterkerk' in Dutch. In addition to important churches, the town centre has many listed buildings and monuments.

Source: Wikipedia

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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