The Great Himalayan National Park, declared a UNESCO World Heritage Site in 2014, covers an area of 754.4 square kilometres. High-altitude forests, alpine meadows, and snow-clad mountains characterise the park's landscape. The park is home to several rare and endangered species of plants and animals, including the Himalayan Brown Bear, Snow Leopard, Himalayan Tahr, and Musk Deer.

The park is a haven for bird watchers, as it is home to over 200 species of birds, including the Western Tragopan, Koklass Pheasant, and Himalayan Monal. The park also offers a unique opportunity to observe and study the behaviour of various animal species in their natural habitats.

To explore the Great Himalayan National Park, you can take a trekking expedition, the best way to experience the park's beauty and wildlife. The park offers various trekking routes that cater to all experience levels, from easy to challenging. The most popular trekking route is the Tirthan Valley Trek, which takes you through the picturesque Tirthan Valley, where you can see several waterfalls, lush green forests, and quaint villages.

Apart from trekking, you can also engage in other activities in the park, such as camping, fishing, and river rafting. The park's pristine rivers and streams are ideal for fishing, and you can catch various fish species, such as trout and mahseer. The Beas River, which flows through the park, is also popular for river rafting, providing adventure enthusiasts with an adrenaline-filled experience.

The best time to visit the Great Himalayan National Park is from April to June and from September to November. The weather is pleasant during this period, and the park is teeming with wildlife. The park remains closed from December to March due to heavy snowfall.

Accommodation options in the park include camping sites, forest rest houses, and lodges. The forest rest houses are popular among visitors, offering comfortable accommodations and stunning views of the park's natural beauty.

In conclusion, the Great Himalayan National Park is a must-visit destination for nature enthusiasts and adventure seekers. It offers a unique opportunity to experience the beauty of the Himalayan region and witness some of the rarest species of flora and fauna in their natural habitats. So, plan your visit to Manali, explore the park's wonders, and get ready to immerse yourself in the lap of nature.