Though it requires a guide, Manaslu is a fantastic hike. It has less than 10% of the hikers of nearby Annapurna Circuit.
Sadly the experience is being degraded due to road construction. The Chinese are pushing through the Himalayas via Tsum valley.
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Nevertheless, its charm will not be less as there are also some alternative way. Road Construction is on going but not have reached to the upper part. It is only around Machha Khola Area.