Yabrud or Yabroud (Arabic: يبرود) is a city in Syria, located in the Rif Dimashq (i.e. Damascus' countryside) governorate about 80 kilometres (50 mi) north of the capital Damascus. According to the Syria Central Bureau of Statistics (CBS), Yabrud had a population of 25,891 in the 2004 census. The city is known for its ancient caves, most notably the Iskafta cave (where, in 1930, a thirty-year old German traveller and would-be archeologist Alfred Rust made many important pre-historical findings), and the Yabrud temple, which was once Jupiter Yabrudis 's temple but later became "Konstantin and Helena Cathedral". Yabrud is home of the oldest church in Syria. The name Yabrud is said to have originated from an Aramaic word meaning "cold" : the city rests upon the Qalamun Mountains slopes (Anti-Lebanon) at a height of 1,550m.