The Kazimierz Sosnowski PTTK Mountain Shelter on Hala Krupowa is a mountain tourist shelter located in the Żywiec Beskids, at an altitude of 1152 meters above sea level, on the Sidzińskie Pasionki clearing. Despite its name, it is not situated on Hala Krupowa. The facility consists of a main section with a terrace, a utility area, and two commemorative plaques: a metal one dedicated to the Home Army unit "Huta-Podgórze" and a wooden one commemorating the visit of John Paul II, who visited this place as a cardinal. The shelter was opened on December 16, 1935, on the initiative of the local municipality and the Polish Tatra Society. Its construction was supervised by Professor Kazimierz Sosnowski, after whom it was named following its reconstruction in 1955 after being destroyed during World War II. In 1944, the Nazis destroyed the original building. After the war, it was rebuilt, and in the 1980s and 1990s, the shelter underwent a thorough renovation. The shelter offers 38 sleeping places in various rooms, as well as a buffet and a dining room. Interestingly, in 1967, the shelter gained electricity through a generator, and in 2001, it was connected to the high-voltage power line. The facility also houses a station of the Mountain Volunteer Search and Rescue, which enhances the safety of tourists. Hiking trails lead to the shelter from various locations, providing opportunities to explore the picturesque surroundings of the Żywiec Beskids. The managers of the shelter since its reconstruction have been individuals associated with tourism, and currently, Eugeniusz Ogrodowicz, who has held this role since 1991, stands out. The shelter is open year-round, making it an attractive destination for mountain hiking enthusiasts.