The Izki Natural Park, with more than nine thousand hectares, is mainly made up of beech, holm oak, oak, gall oak, alder, birch forests... 

Several rivers enter the park to fill it with life, such as the Izki, Molino or Berron. It has a total of 15 trails that go through the woods to discover the flora and fauna of Izki, such as the Medium Peak, a rare species of woodpecker.

The only inhabited nucleus of the park is the medieval town of Corres, which has a recreational area with tables, barbecues, fountains and swings. 

The most attractive points of the Izki Natural Park are: the Olandia Lagoon, the Corres Ravine and the Corres a Bujanda gorge.