This is a very interesting section. You walk through barren landscapes, alternated with beautiful forests. You have to cross many passes and pass remote mountain villages, where time seems to have stood still. Both Hindu Chhetri and Buddhist are living in this part of Nepal. You end this section in Rara Lake. The crystal clear lake is surrounded by forests and mountains. Especially when there is no wind and the mountains and clouds are reflected in the lake, it is a stunning sight. Still very few tourists find there way to West-Nepal and most of the time you have the trail completely to yourself, with some nice encounters with the friendly locals.
You can combine this hike with the amazingly beautiful Phoksundo Lake. You need to add around 5 days for this.