The Arun Valley Trek is a challenging trek in the eastern region of Nepal that takes you through the remote and picturesque Arun valley, which is considered one of the most biodiverse areas in Nepal. The trek starts from Tumlingtar, a small town located on the banks of the Arun River, and passes through rhododendron and bamboo forests, traditional villages, and beautiful landscapes. Along the way, trekkers have the opportunity to see a wide variety of flora and fauna, including orchids, butterflies, and the elusive red panda.
The trek is particularly famous for its rich culture, where trekkers can interact with the local ethnic groups such as the Rai, Limbu, and Sherpa people. The highlight of the trek is the peak climbing to the Mera Peak which is the highest trekking peak in Nepal.
The trek is considered as a moderate to challenging trek, as it includes steep ascents and descents, and can take anywhere from 12 to 21 days to complete, depending on the route chosen. It is best to trek during the months of September to November and March to May, when the weather is clear and dry.
Overall, the Arun Valley Trek is a true adventure that offers a unique blend of natural beauty, cultural immersion, and physical challenge. It is an ideal destination for those looking for an off-the-beaten-path trek in Nepal.