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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.
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.
Natural stone is used as architectural stone (construction, flooring, cladding, counter tops, curbing, etc.) and as raw block and monument stone for the funerary trade. Natural stone is also used in custom stone engraving. The engraved stone can be either decorative or functional. Natural memorial stones are used as natural burial markers.
A cairn is a human-made pile (or stack) of stones raised for a purpose, usually as a marker or as a burial mound. The word cairn comes from the Scottish Gaelic: càrn [ˈkʰaːrˠn̪ˠ] (plural càirn [ˈkʰaːrˠɲ]). [1] Cairns have been and are used for a broad variety of purposes.
Indian rock-cut architecture is more various and found in greater abundance in that country than any other form of rock-cut architecture around the world. [1] Rock-cut architecture is the practice of creating a structure by carving it out of solid natural rock. Rock that is not part of the structure is removed until the only rock left makes up ...
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.
In modern Breton, the word peulvan is used, with peul meaning "stake" or "post" and van which is a soft mutation of the word maen which means "stone". In Germany and Scandinavia the word Bauta is used (German: Bautastein ; Norwegian: bautastein ) and this occasionally makes its way into English with the term "bauta stone".
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.