On the second floor of the museum in the hall of nature, illustrations are exhibited that tell in detail about the Repetek, Amudarya, and Koytendag state reserves. The Repetek Reserve was founded on October 27, 1928 with the aim of preserving the Karakum. Diorama familiar with the animal and plant world reserve. To preserve the coastal zones of the Amu Darya, the tugai Lesov, rich flora and fauna on May 27, 1982, the Amu Darya Reserve was founded. The diorama depicts a tugai red deer, a boar, and deer birds such as crane, swan, goose, pheasant, ducks, there is a wide variety of flora. The rarest exhibit on the diorama is the missing Turanian tiger. In the shop window you can see fish. This sturgeon, grass carp, carp, carp and others. In the next window you can see a lot of butterflies, insects and spiders. Koytendag State Reserve was established on June 11, 1986. On the diorama of the reserve are traces of dinosaurs, left 150 million years ago, as well as the Umbar-dere waterfall, Kaynar-baba lake, the flora and fauna of Koytendag. In this mountain region there are many small and large caves. They were formed by karst phenomena for millions of years. In the museum you can learn a lot of interesting facts about the caves Dashyurek, Hashimyuk, Gap-Gotan, Gyulshirin. On the diorama, which tells about the cave Hashimyuk, beautiful figures of stalactites and stalagmites are depicted. Minerals Koytendag also exhibited in the window. The hall ends with photographs of famous scientists and information about them.