The Bhotiya people are closely related to several other groups and ethnic boundaries are porous.[4](p56) One group is the Bhutia, the main ethnolinguistic group of the northern part of the Indian state of Sikkim. A second is the Uttarakhand Bhotiya of the upper Himalayan valleys of the Kumaon and the Garhwal divisions of Uttarakhand. These include the Shauka tribe of Kumaon, the Tolchhas and the Marchhas of Garhwal. A third related group are the Dzongkha speaking Ngalop people, the main ethnolinguistic group of Bhutan. The Bhotiya are also related to several dispersed groups in Nepal and the adjacent areas of India including the Tibetans and Sherpas.