The one of the most successful projects to bring animals back to its natural habitat in the world is Hustai National Park, where wild Mongolian horses (przewalski's horse) were brought back to their homeland. Now a home to more than 300 horses grazing in the protected areas surrounded by the nomads who are in charge of safeguarding the horses and the wildlife of the park. The park is known for its welcoming of the visitors, observation and research of the wildlife, not only the wild horses, but for the red deers, wolves, marmots, and various birds. 50 hectares of the park stretches from the rocky mountain with Siberian birch trees through the rich grassland to the Tuul river valley. The observation of the wild horses are done early morning or in the evening when horses come down to the water source.