Doi Jong National Park is situated in the areas of Sob prab District, Thern District, and Mae-prik District of Lampang Province, and Li District of Lam-poon Province. The geographical features of the National Park consist of high mountains. Doi-jong is the highest mountaintop of the National Park (1,339 meters above the sea level) with beautiful scenery and various kinds of forests including mixed forests, arid evergreen forests, and pinery, and being the source of streams and rivers.

Topography
The topography of the National Park consist of small sized and large sized mountains, extending from the north to the southwest of the area. These mountains are the sources of many gullies flowing into Wang River (Wang River is the main river of Lampang Province and also being the water source for many reservoirs such as Mae-prab Reservoir, Huay Mae-poo Reservoir, Mae-yong Reservoir, etc.
In general, the topography of the area consist of stony mountains with decorative minerals, zinc, granite, and marble.

Climate
The climate in lower areas at foothills of the National Park is similar to other areas in the Northern Region of which the highest temperature is 43.1°C and the lowest temperature is 9.9°C. Meanwhile, temperatures on the mountaintops are lower than temperatures on flatlands of the National Park. The lowest temperature is 4°C and the average rainfall is 893.6 mm/year.

Flora and Fauna
There are various kinds of forests within the areas of the National Park, including timber forests, mixed deciduous forests, arid evergreen forests, and pinery.
Wild animals found in the National Park include Asiatic black bears, Muntiacus Muntjak, monkeys, wild boars, tree shrews, squirrels, mongooses, masked palm civets, birds, snakes, etc.