Naeyeonsan Mountain is beautiful like an Oriental painting, and is one of the Taebaeksan Mountain. The mountain has deep valleys, clean water, and 12 waterfalls, impressing visitors. Dongbong, who spent his whole life at Bogyeongsa Temple, said, in the 16th year of the reign of King Jeongjo (AD 1792), "Water flowing from Singusan southward and Naeyeonsan Mountain northward is combined and flows to one side. The water source is 12km long, and waterfalls, cliffs, and layered walls, and fantastic rocks and stonesexist along with bent pine trees. The residents here call it Sogeumgang."
Naeyeonsan Mountain(Height: 710m), which is located northeast of Songra-myeon, Buk-gu, Pohang-si, Gyeongsangbuk-do, has 12 waterfalls. In light of altitude above sea level, the mountain is not that high. However, since the mountain is located near the coast, it looks higher and more aloft compared to mountains with similar heights inland. Cheonghagol, with the length of 16km, surrounds the mountain. In addition to Naeyeonsan Mountain, towering mountains such as Munsusan (622m), Hyangrobong Peak (930m), Satgatbong Peak (718m), and Cheonryeongsan Mountain(775m) surround Cheonghagol thus, the valley is as deep and quiet as any other high deep valleysurrounded by tall mountains. In particular, the valley has many waterfalls and swamps, and it is difficult to find a place where diverse shapes of waterfallscan be viewed from one place.
Cheonghagol starts from Bogyeongsa Temple, a one-thousand-year-old temple. They say that this temple was built by the monk Jimyeong during the reign of King Jinpyeong. The temple is called Bogyeongsa Temple since it was built after the Buddhist scriptures and Palmyeonbogyeong, which is a scripture, brought by the monk from China were buried in a pond. Currently, the temple has several buildings such as Daewungjeon, the main building Jeokgwangjoen Cheonhwangmun and Yosachae. However, it is not large compared to its long history. The temple does not have extraordinary cultural assets, with the exception of the tombstone (Treasure No. 252) of the Most Reverend Priest Wonjin, who was a highmonk during the reign of King Gojong in the Goryeo Dynasty, and a Buddhist stupa (Treasure No. 430). However, the atmosphere of the temple is neither crowded nor extravagant. Since the temple has thick forests nearby, it is a very good place to summer.
Once you climb the walking route connecting to a waterway and 1.5km after passing Bogyeongsa, Ssangsaeng Waterfall, the first waterfall, appears. Even though the waterfall is not that magnificent, the shape of the two waterways falling from both sides is very elegant. Passing the waterfall, Bohyeon Waterfall (the second waterfall), Sambo Waterfall (the third waterfall), Jamryong Waterfall (the fourth waterfall), and Mubong Waterfall (the fifth waterfall) appear. Among them, in the valley of Jamryong Waterfall, a scene from the movie Nambu Army, in which the soldiers of the Nambu Army gather in the valley of Jirisan Mountain bathe nude, regardless of their sex or age, was filmed.
The most beautiful scenery among the 12 waterfalls of Cheongha Valley can be seen from the vicinity of Gwaneum Waterfall (the sixth waterfall) and Yeonsan Waterfall (the seventh waterfall). In the vicinity of Gwaneum Waterfall, a double waterfall and precipices such as Seonildae, Sinseondae, Gwaneumdae, and Wolyeongdae are enclosed like a long wall. Next to a pond created by water from the waterfalls, a large cave exists. As you enter the cave, you can see the falling watercourse of the waterfalls, which are hiding one entrance. Once you pass the viaduct over Gwaneum Waterfall, you can see the grand appearance of Yeonsan Waterfall, which 30m high and 40m long. The waterfall is the largest waterfall in Cheongha Valley. The spectacle of a big watercourse falling beside a steep cliff called Haksodae generates excitement from visitors.
As you climb along the waterway, about 15 minutes after passing a path on the rock wall in front of Gwaneum Waterfall, another waterfall appears. This waterfall is called Eunpok Waterfall, which means a hidden waterfall, since the waterfall is not easy to find. Seeing its fine water falling to the blue swamp will make you calm. Above Eunpok Waterfall, Simyeongpok Waterfall, First Bokhopok Waterfall, Second Bokhopok Waterfall, and Third Bokhopok Waterfall exist. However, few people go there because just seeing the eight waterfalls can make the visitors appreciate Cheongha Valley on Naeyeonsan.
It takes about two hours to take the 6km round trip from Bogyeongsa Temple to Yeonsan Waterfall. Since the walking routes are built well, even children or the elderly can use the routes.