The conglomerate is the main rock that builds massif of the Sulov Rocks. It has got its name thanks to its peculiarity. He was named by the geologist Dionýz Štúr. This sedimentary rock is composed of pebbles of calcareous (carbonate) rocks – limestones and dolomites, which originate in decaying geological layers from Mesozoic. In the late Tertiary (Paleogene) the rivers brought worked stones - pebbles from the land, and laid them at the mouth of the sea. Rock components, with an average size of 5-10 cm, are joined together by calcareous sealant. The formation of conglomerates reaches a considerable thickness near Sulov (more than 500m). According to recent research, some of the layers had settled in fresh water – lake environment. Isolated blocks of compact limestones rarely appear along the strip of conglomerates. They are Mesolitic klippes. Due to their geological origin, they are close to the klippes of the Manins. The largest klippe nearby Sulov is above the village to the west. The nature trail passes under it between stops no. 16 and 17. Light gray limestone was mined here in 1951-1955. The abandoned quarry naturally overgrown with the original vegetation after mining.