The Dongdae Mountains are a small outlying range of the

Taebaek Mountains The Taebaek Mountains are a mountain range that stretches across North Korea and South Korea. They form the main ridge of the Korean peninsula. Geography The Taebaek mountains are located along the eastern edge of the peninsula and run along ...

. They run along the east coast of

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...

through the cities of

Pohang Pohang () is a city in the province of North Gyeongsang, South Korea, and a main seaport in the Daegu-Gyeongbuk region. The built-up area of Pohang is located on the alluvium of the mouth of the Hyeongsan River. The city is divided into two wa ...

Gyeongju Gyeongju ( ko, 경주, ), historically known as ''Seorabeol'' ( ko, 서라벌, ), is a coastal city in the far southeastern corner of North Gyeongsang Province in South Korea. It is the second largest city by area in the province after Andong, ...

, and

Ulsan Ulsan (), officially the Ulsan Metropolitan City is South Korea's seventh-largest metropolitan city and the eighth-largest city overall, with a population of over 1.1 million inhabitants. It is located in the south-east of the country, neighboring ...

. Notable peaks include

Toham Mountain Toham Mountain or Toham-san is a mountain with a height of in Gyeongju City in southeastern South Korea. It is part of the minor Dongdae Mountains range. The mountain lies within Gyeongju National Park and is the site of a large number of his ...

Gyeongju National Park Gyeongju National Park ( ko, 경주국립공원, 慶州國立公園) is located in the province of Gyeongsangbuk-do, South Korea, and is the country's only historical national park. It was first designated a national park in 1968. The park cove ...

, as well as Dongdae Mountain itself in Ulsan. The Dongdae Mountains separate the

Hyeongsan River The Hyeongsan River is a river in southeastern South Korea. It flows from Baeyanggol Valley (배양골), Wolpyeong-ri (월평리/), Dudong-myeon (두동면/), Ulju County in Ulsan to the Sea of Japan, covering a distance of about 62 km. The ...

basin from the belt of small streams flowing directly into the

Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it h ...

(East Sea).

See also