Many cave visitors do not understand the importance of maintaining cave ecosystems by adhering to the code of ethics for cave explorers. Many local residents also hunt bats. Hunting and extermination of bats should not be carried out. Because it can cause environmental damage. This research aims to determine brightness and digestibility with environmental factors. This research is also used as a biology learning resource. The approach used is a quantitative approach, with the type of research namely exploratory descriptive research. The method used is the exploratory method with purposive random sampling technique. Based on the research results, the types of bats found at the research location in Gua Harta and Gua Gambang in the Karst Area of South Malang Regency consisted of 2 sub-orders Microchiropteran and Megachiroptera, 4 families (Vespertilionidae, Rhinolophidae, Hipposideridae and Pteropodidae) and 8 species. (Cynopterus horsfieldi, Miniopterus australis, Miniopterus scrheibersii, Rhinolophus boornensis, Rhinolophus affinis, Rhinolophus pusilus, Hipposideros larvatus, Hipposideros bicolor). The diversity index in Harta Cave is 1.48 < Gambang Cave 1.87, indicating moderate species diversity. The evenness index at Harta Cave is 0.82 < Gambang Cave 1.03, which is classified as a high level of evenness. The Dominance Index in Gua Gambang with a value of 0.17 < Gua Harta 0.21 both have low dominance. The diversity of bats (Chiroptera) found in Harta Cave and Gambang Cave can be used as a learning resource on the subject of animal diversity in bats
