This region is blessed with an incredible diversity of natural beauty and culture. Arun valley trek is between two highest mountains, Everest and Makalu. You can see significant views of Mt. Everest, Makalu and numerous other mountains. Sherpa, Rai and Limbus are the main inhabitants of this region. You can walk up north of the Arun river to Sedua and Num, then cross Barun La (4110m) to the upper Barun khola valley for a close look at Makalu. You can put together an even wilder trek by crossing Sherpani col and west col into the upper Hongu valley. The highest point of this trek is Salpa Bhanjyang and from there you can also visit Hindu holy lake called Salpa Lake (3414m.)