We climb to the village of Pheriche (13,907ft/4238m) which is not far from Dingboche (a village en route to Island Peak). Pheriche has become famous for its high altitude research center. The center attracts world renowned physicians who acquire data to analyze the effects of high altitude on human physiology. During our stay we visit the research center and learn more about the effects of high altitude on Himalayan climbers. Hiking time: 4 hours. We also spend an additional day further acclimatizing and hiking.

Start Point: Deboche (12, 563 ft/3770m)
End Point: Pheriche (13,907ft/4238m)
Distance: 6.47 miles
Hike Time: 4 hours