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River flows from a non-karst area, whereas
Zelenka Creek and Šica Creek are true karst streams. Kopanj Hill, an isolated dolomite hill 70 meters (230 ft) high, rises in the middle of the karst field and is a unique example of such a feature in a Slovene karst area. The floor of the karst field is covered in alluvial clay 5 meters (16 ft) to 10 meters (33 ft) deep, deposited on relatively pure Jurassic limestone. Only a few patches of the surface are composed of Triassic dolomite, which is more or less impermeable. During the Pleistocene, the Račna Karst Field was a lake and water drained from it into the karst underground through what are now dry inflow caves higher on the slopes at the edge of the area. At that time, Kopanj Hill was an island in the lake.
304:) have extensively studied the area's fauna. They recorded 27 species of dragonflies, five of which are threatened. Dragonflies can especially be found in areas with slowly flowing water. There are 68 species of butterflies, of which 14 are threatened. The ecological significance of the Račna Karst Field is highlighted by the fact that 12 of the total 19 species of amphibians in Slovenia are also found here. Some of these are killed in large numbers by cars every spring when they cross the local road to their spawning area. Seventy-eight species of birds nesting here have also been inventoried, as well as two species that only pass through; 24 of these species are on the
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172:, which is about 5 kilometers (3.1 mi) away as the crow flies. Because water covers potential farmland for part of the year, barriers have been built at both sinkholes into Inlet Cave to catch branches and other debris and allow the water to drain faster. Karst hydrology studies have shown that narrow areas in the depths of the cave that are inaccessible to human exploration are a significant factor in the speed of drainage through the sinkholes.
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streams, Zelenka Creek and Šica Creek, originate at karst springs on the edge of the karst field and then flow across it from the west toward the east. Zelenka Creek meanders through the karst field for 2 kilometers (1.2 mi) and is dry during periods of drought. Šica Creek is fed by two springs at its source and meanders for 3 kilometers (1.9 mi). During flooding all three watercourses flow together and flow into Inlet Cave (
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164:) at the southeast end of the karst field. Sometimes, when the water does not drain quickly enough, a karst lake forms, reaching as far as the first houses in Velika Račna. The road connecting the region to Grosuplje also often floods, and on 24 October 1993 a flood lasting three weeks flooded the fire station in Velika Račna. All of the water that drains on the east edge of the karst field flows underground to
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1922, as well as the photographers
Bogumil Brinšek, Josip Kunaver, and Ivan Tavčar. The geographers Drago Meze and Ivan Gams wrote more detailed studies of the area in 1977 and 1986. The botanical features of the karst field were explored by Luka Pintar in 1991. The last major study was carried out in 2000 by the Fauna and Flora Cartography Center (
368:), which folk belief has endowed with supernatural power. The spring is said to go dry only during times of great catastrophes (e.g., during the Second World War). The village at the foot of the hill, Velika Račna, also has cultural historical value, and features a large Baroque chapel that was created under the administration of Čušperk Castle.
135:
The karst field has a bowl-like shape with a level floor and a distinctly higher margin, and water enters it from the karst underground. Many other karst features are present in the karst field, such as springs, sinkholes, and estavelles. The karst field has three different watercourses; the
Dobravka
155:
The hydrology of the area consists mainly of three rivers. The
Dobravka River is a continuation of two non-karst streams: Grosupeljščica Creek and Podlomščica Creek. It meanders for nearly 1 kilometer (0.62 mi) through the karst field and then disappears into the ground. Both of the true karst
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Researchers started studying the Račna Karst Field during construction of the railroad to Kočevje in 1893. During this period, several karst caves in the
Ribnica–Kočevje karst region were discovered and explored. One of the pioneers of such research was Pavel Kunaver, who wrote about the area in
132:-oriented ridges; it is approximately 4 kilometers (2.5 mi) long and 1 kilometer (0.62 mi) wide, and has a total area of 4 square kilometers (1.5 sq mi). It lies at an elevation of 325 meters (1,066 ft).
229:, literally 'pond, puddle') that retain water throughout the entire year. They are important for aquatic flora and fauna, and also function as a water resource for other animals in the karst field during droughts.
356:, is a popular excursion destination and a cultural site. Assumption Church at the top of the hill was first mentioned in written sources in 1433. During the 19th century Jožef Prešeren, uncle of the Slovene poet
76:. It has rich natural and cultural value. Because of its ecological significance, it is anticipated that a nature park will be established there and that it will be included in the Natura 2000 program.
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360:, served as a curate at the church. A branch school of the Grosuplje Primary School also stands on the hill and has operated since 1865. The northern slope of Kopanj Hill is the site of Mary's Spring (
352:, stands at the foot of the hill below the castle. Kopanj Hill, an isolated elevation that commands a strategic position and served as a refuge for the locals in prehistory and during
225:'gushing spring'). The largest of these are the Srednjice and Kote estavelles. Another characteristic feature of this karst field is depressions (locally known as a
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The Račna Karst Field has several habitats, some of which are significant at the
European level. The land is predominantly grassland, with patches of woods and
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here and there. Brush is especially present along the river channels, along with areas covered in sedge or rushes. Spring flowers include the bog violet (
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Central part of the Račna Karst Field with Kopanj Hill (background) and
Zelenka Creek (foreground)
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stand immediately before entering the Račna Karst Field. It was plundered and burned by the
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The Račna Karst Field has several estavelles (locally known as a
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in the northern edge of the Lower
Carniolan karst area, south of
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Meze, Drago. 1977. Prispevek k hidrologiji
Radenskega polja.
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The Račna Karst Field is named after the settlements of
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103:) is based on the older form of the settlements' name.
296:Experts from the Fauna and Flora Mapping Center (
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405:Etimološki slovar slovenskih zemljepisnih imen
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441:Natura 2000 v Sloveniji: Metulji. Lepidoptera
348:on 12 September 1943. St. Martin's Church, a
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16:This article is about the Račna Karst Field (
389:Grosuplje: Inštitut za fizikalno biologijo.
128:The Račna Karst Field lies in an area with
120:), commissioned by the local municipality.
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488:Maček, Janko. 2011. "Usodna jesen 1943."
465:20). Ljubljana; Založba ZRC, pp. 114–115.
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1005:Mount Mary Magdalene archeological site
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302:Center za kartografijo favne in flore
143:An estavelle in the Račna Karst Field
118:Center za kartografijo favne in flore
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459:Geografski vidiki poplav v Sloveniji
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407:. Ljubljana: Modrijan. p. 340.
306:IUCN Red List of Threatened Species
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443:. Ljubljana: Založba ZRC, p. 237.
269:). Specimens of marsh lousewort (
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387:Natura 2000 na Radenskem polju.
385:Jogan Polak, Lara et al. 2005.
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510:Račna Karst Field on Geopedia
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439:Čelik, Tatjana et al. 2005.
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476:Krajevni leksikon Slovenije
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92:. The local adjective form
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22:). For the Radenci Basin (
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1100:Municipality of Grosuplje
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700:Mala Loka pri Višnji Gori
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561:Municipality of Grosuplje
474:Savnik, Roman, ed. 1971.
457:Komac, Blaž et al. 2008.
1105:Karst fields of Slovenia
281:) and white beak-sedge (
895:Zagradec pri Grosupljem
785:Praproče pri Grosupljem
765:Podgorica pri Podtaboru
715:Mala Vas pri Grosupljem
247:snake's head fritillary
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670:Hrastje pri Grosupljem
655:Gorenja Vas pri Polici
635:Dolenja Vas pri Polici
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340:The ruins of medieval
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1076:45.91389°N 14.68583°E
875:Veliki Vrh pri Šmarju
640:Gabrje pri Ilovi Gori
600:Brezje pri Grosupljem
572:Administrative seat:
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291:Menyanthes trifoliata
275:Gentiana pneumonanthe
273:) and march gentian (
271:Pedicularis palustris
265:), and marsh orchid (
251:Fritillaria meleagris
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770:Podgorica pri Šmarju
523:at Wikimedia Commons
463:Geografija Slovenije
403:Snoj, Marko (2009).
287:Potentilla palustris
168:, the source of the
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760:Plešivica pri Žalni
730:Mali Vrh pri Šmarju
261:), spotted orchid (
1081:45.91389; 14.68583
428:Geografski vestnik
354:Ottoman incursions
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279:Drosera intermedia
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151:Bank of Šica Creek
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53:[ˈɾaːtʃna]
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1015:Račna Karst Field
1000:Grosuplje Library
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850:Velika Ilova Gora
521:Račna Karst Field
519:Media related to
366:Marijin studenček
320:Cultural heritage
308:. The threatened
283:Rhynchospora alba
263:Dactylorhiza spp.
259:Leucojum aestivum
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189:Zatočna jama
183:Inlet Cave (
162:Zatočna jama
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86:Velika Račna
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1079: /
1046:Janez Janša
1041:Sašo Hribar
855:Velika Loka
675:Huda Polica
568:Settlements
328:Kopanj Hill
314:Lutra lutra
66:karst field
1094:Categories
1064:45°54′50″N
936:Jerova Vas
815:Šmarje–Sap
805:Šent Jurij
780:Ponova Vas
725:Mali Konec
705:Mala Račna
595:Blečji Vrh
372:References
170:Krka River
90:Mala Račna
49:pronounced
1067:14°41′9″E
983:Landmarks
905:Železnica
745:Paradišče
740:Medvedica
680:Kožljevec
575:Grosuplje
346:Partisans
166:Krka Cave
124:Geography
70:Grosuplje
840:Troščine
665:Gradišče
107:Research
94:radenski
74:Slovenia
946:Razdrto
931:Boštanj
890:Vrbičje
810:Škocjan
790:Predole
645:Gajniče
620:Čušperk
583:Current
362:Slovene
298:Slovene
203:Slovene
185:Slovene
158:Slovene
130:Dinaric
114:Slovene
98:demonym
64:) is a
58:Slovene
28:), see
956:Šmarje
941:Perovo
924:Former
795:Rožnik
775:Polica
685:Lobček
650:Gatina
615:Cikava
610:Cerovo
605:Brvace
490:Zaveza
227:močilo
223:vretje
101:Radenc
900:Žalna
835:Tlake
625:Dobje
590:Bičje
239:brush
219:retje
885:Vino
845:Udje
755:Pece
690:Luče
88:and
80:Name
43:The
951:Sap
750:Peč
461:(=
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