Gachang-myeon is a myeon, or township in rural southeastern Daegu

Daegu

Daegu , also known as Taegu, and officially the Daegu Metropolitan City, is a city in South Korea, the fourth largest after Seoul, Busan, and Incheon, and the third largest metropolitan area in the country with over 2.5 million residents. The city is the capital and principal city of the...

, South Korea

South Korea

The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

. Part of Dalseong County, it is separated from the urban center of Daegu by the ridgelines of Yongjibong and Apsan. These two mountains are separated by the narrow valley of the Sincheon

Sincheon

Sincheon or Sinch'ŏn can refer to several things in South and North Korea:* Sincheon , a stream in northern Gyeonggi province* Sincheon , a stream in Daegu* Sincheon , a neighborhood in Songpa-gu, Seoul...

, a tributary of the Nakdong which drains most of the township. The valley of the Sincheon also hosts the only roads that connect Gachang to central Daegu.

Gachang-myeon is ringed by mountains and threaded by narrow valleys. These include Biseulsan

Biseulsan

Biseulsan is a mountain of Gyeongsangbuk-do, eastern South Korea. It has an altitude of 1084 metres....

 (1084 m) and Choejeongsan

Choejeongsan

Choejeongsan is a mountain in the city of Daegu, South Korea. It can be found in the county Dalseong, in the western part of the city. Choejeongsan has an elevation of ....

 (889 m). This rugged topography makes it a favored destination for outings, both for mountain climbers and for those seeking only to enjoy the resort facilities in the Naengcheon valley. Heritage sites include the Nokdong Seowon, a seowon

Seowon

Seowon were the most common educational institution of Korea during the mid- to late Joseon Dynasty. They were private institutions, and combined the functions of a Confucian shrine and a preparatory school. In educational terms, the seowon were primarily occupied with preparing students for the...

, and the Buddhist temple of Unheungsa.

To the south, Gachang is equally isolated by a line of low mountains that lie between it and Cheongdo county in Gyeongsangnam-do

Gyeongsangnam-do

Gyeongsangnam-do is a province in the southeast of South Korea. The provincial capital is located at Changwon. It contains the major metropolitan center and port of Busan. Located there is UNESCO World Heritage Site Haeinsa, a Buddhist temple that houses the Tripitaka Koreana and attracts many...

. Here the ridgeline is broken by the pass of Paljoryeong

Paljoryeong

Paljoryeong is a mountain pass in southeastern South Korea, lying between the peaks of Bonghwasan and Sangwonsan, which are both slightly over 660 meters high. The pass itself is slightly less than above sea level. It lies on the border of modern-day Daegu metropolitan city and Cheongdo,...

.

Gachang-myeon is the site of a major water supply facility for Daegu, the Gachang Dam.