The entrance to the adit is located in a steep rock wall at a height of about 10 meters above the Kaczawa Valley. The adit penetrates into the Wielisławka massif to a depth of just under 30 metres. A few dozen meters to the west (closer to the old mill), there were several openings, now partially or completely filled, leading to much longer corridors, exceeding 200 metres.
The adit is carved into the northern slope of the Wielisławka massif. The steep banks of the Kaczawa River, in which the adit is carved, are primarily composed of argillaceous, siliceous schists, and lydites. The argillaceous schists are gray, thinly layered, and exhibit a silky luster on the cleavage surfaces. They often contain iron oxides, which color them red. On the other hand, siliceous shales and lydites are black, sometimes also reddish in color, harder, with numerous white quartz veins.
At the entrance to the adit, the bedding surfaces are inclined towards the northeast at an angle of approximately 60 degrees. The adit leads into the depths of the Wielisławka massif, all the way to the boundary with rhyolites. These rocks have a pink or purple-pink color and exhibit a porphyritic structure with visible phenocrysts of quartz, potassium feldspar, plagioclase, and biotite against the background of the rock mass. Most commonly, they have a massive texture, sometimes exhibiting porosity. These rocks are characterized by distinct columnar jointing, visible on the western slope of Wielisławka Mountain in an exposure known as the Wielisław Organ.
The rhyolites are dated to approximately 297 million years ago. At the contact between the rhyolites and metamorphosed rocks of the older Paleozoic, gold deposits were formed, which were the subject of exploration and the reason for the construction of adits as early as the 16th century. In addition to the adit, on the northern slopes of Wielisławka, numerous traces of mining activity can be observed, such as pits, sinkholes, and spoil heaps. The origin of the gold deposits is explained by hydrothermal processes associated with Variscan post-collisional magmatism. The gold sulfide mineralization is most commonly associated with quartz veins present in the rhyolite-contacting argillaceous and siliceous schists. Such veins are visible in the walls of the initial section of the adit. Within these veins, a series of sulfide minerals, such as pyrite, chalcopyrite, arsenopyrite, and galena, occur.
Gold in native form (265) most commonly occurs within pyrite minerals or in dispersed form in schists and lydites. In the Różana region, within porous rhyolites and accompanying tuffs, the occurrence of agates is known. They take the form of oval, ellipsoidal, or irregular shapes, ranging in size from a few to thirty centimetres. Their formation is also associated with hydrothermal processes accompanying Permian volcanism.
