Chungnyeongsan () is a mountain in Gyeonggi Province, South Korea. Its area extends across Namyangju and Gapyeong County. Chungnyungsan has an elevation of .
In Joseon-era literature, it is known by various names: in the Sinjà Âng Tongguk yà Âji sà Ângnam, it is recorded as Birangsan (); in the Daedongyeojido and ', it is recorded as Biryeongsan (). The current name stems from local records such as the Kyà Ânggiji () and Kyà Ânggià Âpchi (), which was then recorded in the Chosà Ân chijijaryo () during the Japanese colonial rule.
It is said that during the late Goryeo dynasty, Yi Seong-gye, the future founder of the Joseon dynasty, was hunting around the area and could not find any prey. He met a hunter on the way, and was told that this is a sacred mountain, and a ritual should be held for the mountain god. The next day, he ascended its peak and performed a ritual, after which he successfully caught five wild boars. The mountain where he caught the boars was named Odeoksan (), meaning 'mountain with five gains'; and the mountain where he held the ritual was named Chungnyungsan, meaning 'mountain to pray spirit'. Its other name, Biryeongsan, has its origins in a legend where a flying dragon was seen above the mountain's valley.
General (1443âÂÂ1468), a Joseon-era general whom the island Namiseom was named after, also prayed to the spirits in the mountain, and the rock where he prayed remains until today.
Boasting a dense pine forest, Chungnyeongsan is a popular destination for hiking and camping, offering people a chance to reconnect with nature. The forest is established as a recreational area in 1995, with campgrounds and accommodations provided. It is listed as part of the 'Eight Scenic Views of Gapyeong' (), alongside Cheongpyeong Lake. This Chungnyeongsan shares the same hangul and hanja with the one in Jangseong County, South Jeolla Province, which is also famous for its cypress tree forest. The forest management charges 1,000 won for individuals 19-years or older, but since 2021, residents of Namyangju can enter for free.
An arboretum, the Garden of Morning Calm was established in the foot of the mountain. It is also a popular tourist destination across all four seasons.