evidence: When there is a lack of clarity on where the boundary is, the solution may lie in tapping the knowledge and understanding of people in the area. The people who have a clear view of where Bhutan's territory ends and China's begins are the yak herders of the area (and also smugglers). The pastures in Doklam plateau have traditionally been the ground of Bhutanese graziers. China claimed in the 1960s that even if Bhutanese graziers were bringing their yak to Doklam they were paying a fee to Tibet for it - but there is no evidence to support this. There is one instance of a family from Bhutan being given grazing rights on payment of a highly concessional fee, but this was in the eastern part of Chumbi valley and not Doklam. It is clear that Doklam is Bhutanese territory and China’s claim on Doklam is thus tenuous.