The Medieval fortress of Jeleč is located on Mount Rogozna, about 25 km south of Novi Pazar. Mount Rogozna has been an important mining point, since it is rich in various ores -- gold, silver, and iron. It has been known as Gümüş Dağ in Turkish, meaning Silver Mountain, and we see Rogozna marked as M(onte) Argentato on 16th-century maps. This fact has certainly been one of the reasons why the fortress of Jeleč was built at the site, watching over important roads. The precise period in which the fortress was built is unknown, it could date as far as the first half of the 12th century, as one of the points in the Komnenian fortification system. However, the first written source mentioning Jeleč dates back to the second half of the 13th century, in the context of events leading to King Dragutin's passing down power to his brother Milutin. After the Ottoman conquest of Serbian medieval lands, Jeleč was an important fortification, in which the Ottoman army remained until the 16th century. The fortress of Jeleč consists of the Upper, Middle and Lower Town, a necropolis and a settlement beneath the walls, identified by earlier scholars. The Upper Town was described and sketched by architects in the first half of the 20th century, but Jeleč was never a subject of a more detailed research. The beginning of one such project, which would involve non-destructive prospection, including LiDAR, prior to archaeological research, is urgent since the fortress remains are in extremely bad condition. One of the reasons for this is the old and newly grown lush vegetation, environmental conditions, and frequent activities of treasure hunters as well. As one of the first steps, the authors of this paper have recorded visible remains of the whole fortress with a GNSS RTK receiver, and thus, the whole surface and shape of the fortress were recorded for the first time. In the Upper Town, there are remains of a granary, a small, possibly secret passage, towers, of which one has several building phases and areas with flattened ground rock. The Middle Town consists of a plateau which includes a building with 3 wells. In the Lower Town, several plateaux can be distinguished. No visible structures survive in the area of the Lower Town, but plateaux and rock piles covered with thick layers of leaves and ground indicate their existence and position. Outer walls have been preserved on several spots, and two round extensions have been identified within them which could have served as towers. A specific method of building was used, which includes the incorporation of natural rock within structures, combined with stone masonry. The only artefacts collected from the fortress come from the areas excavated by treasure hunters. The collection consists only of several pieces of pottery sherds and two cleats. However, an indicative piece of a horizontal-type handle can be dated into the period of the 13th--15th century. Handles like this belong to a specific type of bowls, probably used for cult purposes. These bowls are a rare find, typically belonging to monastic and church complexes, with only two known pieces which come from urban areas, from Stalać and Belgrade. A necropolis was also recorded on a hill south-west of the fortress. Seven gravestones were found, of amorphous and semiregular shape, some of which belong to the recumbent slab with a two-sloped surface type. [ABSTRACT FROM AUTHOR]