The rich vegetation of the park supports diverse species of wildlife including the endangered red panda, musk deer, Himalayan black bear, leopard, jackal, Himalayan tahr, Yellow-throated martin, wild dog, wild boar, common langur, rhesus macaque and the common otter. During winter the park abounds in bird varieties like coots, great-crested grebe, black-necked grebe, red crested pochard, mallard, common teal, merganser and gulls. Migrant water fowl and gallinaceous birds can also be seen during certain seasons.

Rara in the far north western part of Nepal is the smallest national park in the country, while the Rara Lake is Nepal's biggest lake. The lake is 167m deep at some places, and drains into the rivers Mugu Karnali via Nijar Khola. Chuchemara Hill at 4,087m is the best vantage point to enjoy magnificent views of the deep blue lake, the forested hillsides and the snow capped peaks.

The journey begins with a flight from Nepalgunj to Jumla, from where it is a 2-3 days hike to reach Rara Lake. Jumla is known for its fine apples and walking through these orchards can be an interesting experience. 

The trek leads through remote countryside toward the Tibetan border.  A journey into the Jumla region and the beautiful Rara Lake is probably one of the most fascinating treks in the Himalaya undisturbed by hordes of trekkers as one finds on other trek routes.

The best time to visit the park is in the spring, summer and autumn. As more people are now visiting the park, tourist services and infrastructure have developed over the years. However, for a great experience, it is still advisable to be self-sufficient if you are traveling alone. Lake Rara is also a popular pilgrimage site for Nepalis.