Wikipedia
Jungnyeong is a South Korean officer rank which is considered the equivalent of a lieutenant colonel (in the Army and Air Force) and also to a commander in the Republic of Korea Navy.
The insignia of a jungnyeong is denoted by two silver starbursts worn on the collar.
Jungnyeong is a mountain pass in the Sobaek Mountains of central South Korea. It reaches a height of . It stands on the flank of Sobaeksan, which reaches more than twice that height.
The pass connects Punggi-eup, Yeongju, Gyeongsangbuk-do with Danyang County in Chungcheongbuk-do. Although today it is little more than a tourist attraction, in past ages it played a key role in connecting the eastern and western regions of the Korean peninsula. Today the Jungang Line railroad passes underneath Jungnyeong; the tunnel is 4.5 kilometres long.
It was also of great religious significance. During the early Silla period, the kings held spring and autumn rites here in honor of the mountain gods. These practices continued into the Joseon Dynasty (1392-1910), when a temple to the mountain god was built here, known as "Jungnyeongsa." In addition, the area was used as a location for Buddhist worship; as Buddhism took root in Silla in the seventh century, the temples of Buseoksa, Choamsa and Huibangsa were built.
Jungnyeong is also sometimes called by the pure Korean name daejae (대재). Both names mean "Bamboo Pass."