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 until recently. This stream was alternatively called "Kemer Brook" ("Kemer Çayı") or, especially in western sources, as the "Caravan Bridge Brook", by the name of a historic bridge, also celebrated in literature, which checked the entry into the city of İzmir throughout the 19th century. The flow of this stream varies from a full rush of water in winter to a trickle, even a dry bed, in summer. In the light of descriptions by Aristides and other accounts dating from the Roman imperial age, this stream seems, in fact, to be the weakest candidate for association with Homer's Meles. Roman-era