Speleology is an activity that in Peja has started to develop quite early and has a great experience in this regard both in cave research and the leadership of tourist groups. Almost every year arrive in Peja different teams of speleologists who research in the caves of Peja and this has been going on for years as they have discovered large caves which require time and long expertise to explore. The two main and most attractive caves in the western region of Kosovo are located in Peja and are located in the most attractive tourist places like Rugova Gorge and Drini i Bardhë Waterfall.
The cave "Gryka e Madhe" (Great Gorge) which is located in the gorge of Rugova, 8km away from the city of Peja, is a mega attraction which is under constant research by speleology experts from around the world. This cave has so far been explored up to 16km of canals and its exploration is still ongoing and will continue for many years to come. It is distinguished by the stunning beauties that are found in it as canals and galleries (rooms) with large dimensions containing natural creations with millions of years of stalagmites, stalactites, etc. What makes this cave interesting is also the presence of water in it where during your expedition you will have the opportunity to see small lakes, water holes, small waterfalls, etc. This cave is unique and ranks among the 10 caves in the world because it has a vertical climb which reaches over 300m. To carry out the expedition in this cave you must be an organized group and have little experience in recreational activities.
The other cave is located in the village of Radac near the waterfall and the source of Drini i Bardhë, 11km away from the city of Peja. This is also a very attractive cave and is otherwise known as the "Sleeping Beauty". After small interventions in infrastructure that have been made in this cave, it has managed to open and be offered to visitors throughout the year. It also serves for educational activities which are organized with schools, etc. Even in this cave there are various galleries in which stalagmites and stalactites are found which offer amazing beauties created by nature for years. The entirety of the cave consists of three parts: the entrance channel, the central gallery and the bathtub channel. It is presented by archaeologists as a cave which was once inhabited.