Like the Leitha Mountains, the Rosalia Mountains are made of gneiss, schist and limestone. The ridge is heavily forested. The highest point is the Heuberg with its Rosalia Chapel, which reaches a height of 748 metres. At the top is the ORF transmitter of Heuberg which covers northern Burgenland. On the steep limestone crags at its eastern foot is Forchtenstein Castle. The range is drained by the Wulka, the Leitha and the Schwarzenbach. Part of the range is located within the Rosalia-Kogelberg Nature Park.