Gasa shares border with autonomous region of Tibet to the north and therefore, the dzongkhag experiences extremely long and hard winters and short but beautiful summer.
The natural splendor of Gasa is unparalled in the country. The Dzongkhag has some of the highest peaks in the kingdom. Over a hundred glacial lakes that are at the foot of these greater Himalayan peaks feed some of the major river systems in the country, including the Phochhu and the Mochhu rivers which join further downstream to form the Sunkosh, eventually draining into the Bay of Bangal.
A famed hot spring and series of Menchus with renowned medicinal properties are another important natural resources in the dzongkhag, drawing numerous locals as well as tourists. Every year a number of tourists pass through the region along its popular trekking trails, including the famous snowmen, one of the longest and most arduous of the treks in the world. The region’s high altitude and extreme climate makes it difficult to practice agriculture but livestock is mainstay, particularly rearing of yaks.
This district hold significant place in the history of Bhutan because it is through Gasa that Zhabdrung Ngawang Namgyel came to Bhutan.