[6] The Rugar Slopes Cave Mass Grave (Grobišče Jama v Rugarskih klancih) is located on rocky terrain in a woods on the northern slope of a heavily karstified hill in a valley east of Mount Rog, 40 meters (130 ft) south of Rog Road, in forest section 65 of the Poljane forest unit.

It contains the remains of political opponents of the Yugoslav Partisan movement, Home Guard members and other soldiers subordinate to German forces that were murdered after the war, and possibly civilian victims as well.

It contains the remains of members of the Home Guard and other armed groups subordinate to the German forces that were murdered after the Second World War.

A three-story bell tower stood in front of the main entrance and had a simple pyramid roof with wooden shingles.

The nave had two rectangular windows on each side; they were slightly rounded on the top, which was fashionable at the time and also allowed more light into the building.

New bells were purchased by Princess Auersperg from the Samassa foundry in Ljubljana and installed just before the outbreak of the First World War, but they were soon removed for military needs.