Trekking can be done from the base, Bhagati, which is a 10 km, three-hour walk.
When he goes home, he has a three-hour walk from the nearest road to his house in eastern Bhutan.
The two- to three-hour walk will end back at the picnic house where hot cider will be served.
Mapou's survivors may have to be relocated to Thiotte, a three-hour walk away.
"I usually take my three-hour walk with the dogs when Bruce's videos are on in the studio," she says.
It was a good three-hour walk, but I think it did me good.
The food has to be carefully rationed in the hope that it will last until the next food distribution - a three-hour walk away.
The men arrive shortly after dawn, sometimes by motorcycle and truck but often on foot - a three-hour walk from the nearest village.
Clearly nervous, she scurried from the school and began the three-hour walk up the mountains to her home.
You can explore six ecosystems in a three-hour walk.