During the dry season, the only permanent water in the park is found in wetlands and remnant pools in the broad Narus Valley near Apoka. These seasonal oases, combined with the open, savannah terrain, make the Narus Valley the park’s prime safari location. The Narus valley is very important for the elephants in the park and also holds a population of Nile crocodiles, which, during the dry season, is restricted to a 10 km long section of the Narus River that retains water intermittently in depressions or pools. Perhaps due to limited availability of food, water and space, the crocodiles have a diminutive size with a maximum length of 2.5 meters.