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A natural monument is a natural or cultural feature of outstanding or unique value because of its inherent rarity, representative of aesthetic qualities, or cultural significance. [1] They can be natural geological and geographical features such as waterfalls, cliffs, craters, fossil, sand dunes, rock forms, valleys and coral reefs.
Monolith with bull, fox, and crane in low relief at Göbekli Tepe. The density of most stone is between 2 and 3 tons per cubic meter. Basalt weighs about 2.8 to 3.0 tons per cubic meter; granite averages about 2.75 metric tons per cubic meter; limestone, 2.7 metric tons per cubic meter; sandstone or marble, 2.5 tons per cubic meter.
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The landscape surrounding Devils Tower is composed mostly of sedimentary rocks. The oldest rocks visible in Devils Tower National Monument were laid down in a shallow sea during the Triassic. [citation needed] This dark red sandstone and maroon siltstone, interbedded with shale, can be seen along the Belle Fourche River.
Protected areas listed as IUCN Category III (Natural Monument) by the World Conservation Union / International Union for Conservation of Nature and Natural Resources (IUCN). Articles tagged as "III" in the Protected Area Infobox are automatically added to this Wikipedia category.
The Midas Monument, a Phrygian rock-cut tomb dedicated to Midas (700 BCE).. Ancient monuments of rock-cut architecture are widespread in several regions of world. A small number of Neolithic tombs in Europe, such as the c. 3,000 B.C. Dwarfie Stane on the Orkney island of Hoy, were cut directly from the rock, rather than constructed from stone blocks.
Misty Fjords National Monument (or Misty Fiords National Monument) is a national monument and wilderness area administered by the U.S. Forest Service as part of the Tongass National Forest. Misty Fiords is about 40 miles (64 km) east of Ketchikan, Alaska , along the Inside Passage coast in extreme southeastern Alaska , comprising 2,294,343 ...
Natural Bridges National Monument is a U.S. National Monument located about 50 miles (80 km) northwest of the Four Corners boundary of southeast Utah, in the western United States, at the junction of White Canyon and Armstrong Canyon, part of the Colorado River drainage.