Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Vrelo Ibra - Vrelo Ibra (pronounced [re.lo ia]; English: Spring of the Ibar River) is the spring of the River Ibar located in the north-east region of Montenegro in Rozaje. It is one of the top natural landmarks in Rozaje. It is located 10 km away from the city center on the northern side at the foot of the mountain Hajla in a dense conifer forest. Rozaje has a big amount of springs but the strongest one is the spring of the river Ibar which is also the longest Montenegrin river.
The answer to this question is:
Natural Place