The Rolwaling trek with Tashi Lapcha pass is a challenging and rewarding trek that takes you through the beautiful Rolwaling Valley and over the Tashi Lapcha pass, which stands at an altitude of 5,755 meters (18,875 feet). This trek is perfect for experienced trekkers who want to explore the remote and unspoiled landscapes of Nepal. 

The trek starts with a scenic drive from Kathmandu to Charikot, which takes around 7-8 hours. From Charikot, you will begin your trek and follow the trail that passes through beautiful villages, dense forests, and glistening rivers. Along the way, you will encounter a variety of flora and fauna, including the elusive snow leopard. 

The highlight of the trek is the crossing of the Tashi Lapcha pass, which requires technical skills and experience. The pass offers stunning views of the surrounding peaks, including Mt. Everest, Mt. Cho Oyu, and Mt. Gauri Shankar. 
The trek also includes a visit to the beautiful alpine lake, Tsho Rolpa, which is one of the largest glacial lakes in Nepal. The lake is located at an altitude of 4,580 meters (15,026 feet) and is surrounded by snow-capped peaks and glaciers. 

Overall, the Rolwaling trek with Tashi Lapcha pass is a challenging and rewarding trek that takes you through some of the most beautiful and remote landscapes of Nepal. It is a perfect choice for experienced trekkers who want to challenge themselves and explore the unspoiled beauty of the Himalayas.