ENG:
The natural bridge Prerast Suplja stena (also Valja prerast) was created by erosion and local flooding of the Prerast River. The arch is 22.5 m long, the width of the channel at the bottom is 7 m, in the middle part of the stone bridge is up to 9.5 m, height below the arch is 36.8 m, above the arch 44.8 m which makes it the largest natural stone bridge in Serbia.
Access to the locality is to the confluence of the Valja Prerast river with the Shashka river, and then by footpath to the natural bridge.
The natural bridge is a natural monument of exceptional importance, which is under state protection.
SRB:
Prirodni kameni most Prerast Suplja stena (takođe Valja prerast) nastao je erozijom i lokalnim plavljenjem reke Prerast. Luk je dugačak 22,5 m, širina korita u dnu je 7 m, u srednjem delu kamenog mosta do 9,5 m, visina ispod luka 36,8 m, iznad luka 44,8 m, što je tj. najveći most od prirodnog kamena u Srbiji.
Pristup lokalitetu je nakon ušća reke Valja Prerast u Šašku reku, a zatim stazom do prirodnog mosta.
Prirodni most je spomenik prirode od izuzetnog značaja, koji je pod zaštitom države.
ENG:
And because a natural rock bridge is a subspecies of a rock window (natural arch in English), we will talk about such a geomorphological formation.
Natural arch is a geological formation, a naturally formed opening, completely surrounded by rock. It is created by various forms of erosion (especially selective erosion - less resistant part of the rock is eroded), but exceptionally it can also be created in another way, for example by a lava flow.
Natural arches can form in all types of rocks, especially in sandstones and limestones. But they are also common in volcanic rocks and can also be found in rhyolite, quartz or granite.
In terms of location, they are found in mountains, but also in deserts and in large numbers on sea cliffs.
Depending on the shape, size, origin and surroundings, rock windows can also be called natural bridges, gates or tunnels.
If the opening in the rock extends to its foot, we speak of a natural gate.
If a stream of water flows through the arch, or it was created by a stream of water, or the surface can be crossed to the opposite side of the terrain obstacle, we can talk about a natural bridge.
If the length of the hole in the rock is greater than the height and width, such an arch can also be called a natural tunnel.
According to the dimensions, natural arches can be large from tens of centimeters to the largest in China, USA and Chad with a span or height of more than 100 meters.
Natural Arch and Bridge Society (NABS) is a non-profit society dedicated to the study, evaluation and protection of natural arches, and defines a natural arch as follows:
1. It must be in the rock. A formation made of compacted soil, ice, or organic matter (eg, a tree trunk, unless it has turned to rock as a fossil) may exhibit all the other attributes of the definition, but it is still not a natural arch.
2. It must be exposed rock. So the arch is surrounded by air. It can be partially embedded in soil or water, but must not be completely enclosed.
3. An opening through a rock must conform to the mathematical or topological definition of an opening. In a non-mathematical sense, the hole must go completely through the rock.
4. The arch must been created by natural, selective removal of rock. Typically, this removal is the result of erosion processes, e.g. by the action of water.
5. The rock framing that is around the arch must still be relatively intact. Fractures and cracks may be present. There may even be some slippage, as long as it is evident that this has occurred after the arch has been formed. Of course, there can be no air gaps in the rock (frame).
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SRB:
A pošto je most od prirodnog kamena podvrsta kamenog prozora (natural ark na engleskom), govorićemo o takvoj geomorfološkoj formaciji.
Prirodni luk je geološka formacija, prirodno formiran otvor, potpuno okružen stenom. Nastaje raznim oblicima erozije (naročito selektivna erozija - manje otporni deo stene je erodiran), ali izuzetno može nastati i na druge načine, na primer lavom.
Prirodni lukovi se mogu formirati u svim vrstama stena, posebno u peščarima i krečnjacima. Ali oni su takođe uobičajeni u vulkanskim stenama, a mogu se naći i u riolitima, kvarcu ili granitu.
U zavisnosti od lokacije, nalaze se u planinama, ali i u pustinjama i u velikom broju na morskim liticama.
U zavisnosti od oblika, veličine, porekla i okruženja, kameni prozori se mogu nazvati i prirodnim mostovima, kapijama ili tunelima.
Ako se otvor u steni proteže do njene osnove, govorimo o prirodnoj kapiji.
Ako kroz luk protiče mlaz vode, ili ga je stvorio mlaz vode, ili se površina može preći na suprotnu stranu prepreke terena, možemo govoriti o prirodnom mostu.
Ako je dužina rupe u steni veća od visine i širine, takav luk se može nazvati i prirodnim tunelom.
Što se tiče veličine, prirodni lukovi mogu biti veličine desetina centimetara, a najveći u Kini, SAD i Čadu imaju raspon ili visinu veću od 100 metara.
Natural Arch and Bridge Society (NABS) je neprofitno društvo posvećeno proučavanju, proceni i zaštiti prirodnih svodova i definiše prirodni luk na sledeći način:
1. Mora biti u steni. Obeležje formirano od zbijenog tla, leda ili organske materije (npr. deblo drveta, osim ako se nije pretvorilo u stenu kao fosil) može pokazati sve ostale atribute definicije, ali to još uvek nije prirodni luk.
2. Mora biti izložena stena. Dakle, luk je okružen vazduhom. Može biti delimično ukopan u zemlju ili vodu, ali ne sme biti potpuno zatvoren.
3. Otvor kroz stenu mora biti u skladu sa matematičkom ili topološkom definicijom otvora. U nematematičkom smislu, rupa mora u potpunosti proći kroz stenu.
4. Luk mora biti napravljen prirodnim, selektivnim uklanjanjem stene. Tipično, ovo uklanjanje je rezultat procesa erozije, npr. dejstvom vode.
5. Kamena konstrukcija oko luka mora još biti relativno netaknuta. Mogu biti prisutni prelomi i pukotine. Možda čak i dođe do nekog klizanja, sve dok je očigledno da se to dogodilo nakon formiranja luka. Naravno, u steni (okviru) ne može biti vazdušnih praznina.
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SRB: Pored zida Prerast Suplje, u Srbiji postoji nekoliko zanimljivih prirodnih lukova (naročito prirodni most), npr.:
ENG: In addition to the Prerast Suplje, there are other natural arches (especially the natural bridges) in Serbia, such as:
- VELIKA PRERAST - 48.383N 22.337E
- MALA PRERAST - 48.383N 22.338E
- SUVA PRERAST - 48.385N 22.310E
- LEDENICA - 43.706N, 22.155E
- BOGOVA VRATA - 43.675N, 22.044E
- E761 ARCH is so named as it is right alongside the main road (E761) which leads from the town of Zajecar to the motorway at Paracin. It is very close to the village of Izvor, about 13 km east of Paracin. Here the road goes though a number of road tunnels and the arch is alongside one of the tunnels on the south side of the road. The opening is about 5 m by 6 m high - 43.856N, 21.612E
- Ozerska vrata - 43.600N, 21.842E
- Prerast Kason̂e - 44.292N, 21.660E
- Prerast u Duboselici - 43.623N, 19.699E
- Rajska prerast - 44.301N, 22.279E
- Prerast Samar - 44.119N, 21.897E
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ENG:
To confirm the log, please visit this place and answer the following questions. You can write the log immediately after sending answers to my profile. I will contact you if something goes don't right.
1) In which rock was this window arch?
2) What are the rock formations that we see on the bottom of the river behind the rock bridge called?
In the case of a lot of water, the answer is not mandatory.
3) Attach a photo of yourself with a bridge to your log. Or a photo of the arch with your GPS device with the coordinates, so that your visit is clearly identified.
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SRB:
Da biste potvrdili unos u dnevnik, odgovorite na sledeća pitanja. Možete napisati dnevnik odmah nakon što odgovorite na moj profil. Ako odgovori ne budu tačni, kontaktiraću vas.
1) U kojoj steni je nastao ovaj prozorski luk?
2) Kako se zovu stenovite formacije koje vidimo na dnu reke iza kamenog mosta?
U slučaju velike količine vode, odgovor je neobavezan.
3) Priložite sliku prozora u dnevnik. Ili fotografija luka sa vašim GPS uređajem sa koordinatama tako da se vaša poseta jasno identifikuje.
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Resources: Wikipedia, nabs.org, information board
***** Happy earth geocaching :) *****
FTF: loslachen.ch