Nature Park of Alvão the moist lands along the riverfront. The Olo River is rich in trout and is populated by the Eurasian otter ("Lutra lutra"). Throughout the region, bird populations are diverse and include nesting pairs of Golden eagles. Mammal populations are marked by the presence of Wild boar ("Sus scrofa"), Roe deer ("Capreolus capreolus"), European badger ("Meles meles"), Granada hare ("Lepus granatensis") and European rabbit ("Oryctolagus cuniculus"). Among reptiles in the area are the Iberian emerald lizard ("Lacerta schreiberi") and the Latastei viper ("Vipera latastei"). No less important to the region is the traditional architecture of the nature park region, especially in
River Meles once a large pool, all of which is known under the general name of Halkapınar ("meaning, the Circular Springs"). The pond embraces today İzmir's industrial neighborhood of the same name and is highly polluted nowadays, fouled especially on its way to the sea, although, until barely a few decades ago, it was a popular summer resort from where an important part of İzmir's drinking water was also provided. The discovery in the 19th century of one complete statue and the head of another, which were thought to represent Artemis, gave way to the name "Diana's Baths" attached to it, while