The Great Himalayan National Park is India’s latest entrant into UNESCO’s prestigious list of world heritage sites. It was formally declared a national park in 1999 and inducted into the list in 2014. It falls under the Kullu district of Himachal and is spread over a total area of 754sq.km. The park boasts of an astounding array of flora and fauna, being home to more than 180 species of birds and 6 different types of vegetations. The Tirthan valley spans the southwestern portion of the park; the parts that lie outside the demarcated park boundaries are sparsely inhabited, and at least so far, haven’t fallen prey to any unscrupulous forms of tourism. To get to the national park, the roadhead is the village of Gushaini, which is about a couple of hours from Kullu. From here it's an 8km trek till the gate of the park, and from there a further 2km to a Rolla, where the camps are laid out for the night. Thereon, one can choose to trek further into the park. Treks of varying lengths and difficulties are available.