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Ravni Dol is the site of five known mass graves associated with the Second World War. The Travna Gora 1–4 mass graves (Slovene: Grobišče Travna gora 1–4) are located at four sites west of Ravni Dol, directly south of the Travna Gora Lodge (Dom na Travni Gori). The fourth grave is marked by a wooden cross below the road. The first grave is about 50 meters (160 ft) below this, the second grave another 10 meters (33 ft) down, and the third grave 10 meters (33 ft) further. The graves contain the remains of 48 prisoners of war from the prison in Kočevje murdered by the Partisan Šercer Brigade on 2 November 1943 in revenge for the escape of 10 prisoners that killed a guard near Glažuta. The Big Mountain Deep Cave Mass Grave (Grobišče Globoka jama na Veliki gori)—also known as the Shaft 217/218 Mass Grave (Grobišče Brezno 217/218) or Krajc Peak Cave Mass Grave (Grobišče Jama v Krajčjem vrhu)—is located north of Krajc Peak (Krajčev vrh) and about 1.5 kilometers (0.93 mi) south of the Travna Gora Lodge. It contains the remains of Slovenes from Travna Gora.
Ferenc, Mitja (December 2009). "Grobišče Travna gora 1". Geopedia (in Slovenian). Ljubljana: Služba za vojna grobišča, Ministrstvo za delo, družino in socialne zadeve. Retrieved October 22, 2023.
Ferenc, Mitja (December 2009). "Grobišče Travna gora 2". Geopedia (in Slovenian). Ljubljana: Služba za vojna grobišča, Ministrstvo za delo, družino in socialne zadeve. Retrieved October 13, 2023.
Ferenc, Mitja (December 2009). "Grobišče Travna gora 3". Geopedia (in Slovenian). Ljubljana: Služba za vojna grobišča, Ministrstvo za delo, družino in socialne zadeve. Retrieved October 24, 2023.
Ferenc, Mitja (December 2009). "Grobišče Travna gora 4". Geopedia (in Slovenian). Ljubljana: Služba za vojna grobišča, Ministrstvo za delo, družino in socialne zadeve. Retrieved October 25, 2023.
Ferenc, Mitja (December 2009). "Grobišče Globoka jama na Veliki gori". Geopedia (in Slovenian). Ljubljana: Služba za vojna grobišča, Ministrstvo za delo, družino in socialne zadeve. Retrieved November 3, 2023.