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 sources describe Meles as a very short stream rising at a number of springs close together in the outskirts of the city to form immediately a circular-shaped lake and joining the sea within eyeview, with a steady and equal flow, alike in summer and winter and navigable almost until its source. The description applies remarkably well to the stream which reaches the sea at a short distance east of the "19th century Kemer – Caravan Bridge Meles" stream, and which is not even a stream in the strict sense of the word, but consist of numerous sources which form at