Yala national park is the most visited national park of sri lanka. It is the second largest and situated in southeast region of the country. It has 5 blocks, but only 2 of them are opening to public. The park covers 979 square kilometers. It was published as a national park since 1938. Yala is home for 44 species of mamals and 215 species of birds. You can get more infotmation from official web site of national park https://www.yalasrilanka.lk