Horogoru Fortress is a triangular-shaped Ganganpyeongjiseong Fortress built on a basalt foundation on the northern bank of the Imjingang River. Since 2001, archaeologists carried out four excavations to learn more about the solidly built fortress walls, wooden fences, large water collecting facilities, and various building sites. Moreover, a large number of tiles, earthenware, and iron relics including Yeonhwamun Wadang roof tiles and Chimi were excavated inside the Fortress. These are important resources for understanding the construction techniques and living culture of Goguryeo as well as the overall structure of the Fortress itself. Horogoru Fortress is located at one of the most important strategic points along the Imjingang River basin, which served as the border between Goguryeo and Silla for roughly 200 years since the middle of the 6th century CE. The relatively more sophisticated relics excavated in large quantities from the area appear to be relics from Goguryeo's border defense command. Horogoru Fortress is also an important resource in that it revealed the unique construction techniques of Goguryeo. The fortification method combined the strengths of an earthen fortress and a stone fortress, which was a distinct fortification method of Goguryeo previously found in Gungnaeseong in China, Daeseongsanseong in Pyongyang, and some of the Goguryeo fortresses in South Korea.

Goseokjeong, one of the “Eight Scenic Views of Cheorwon,” is a granite rock formation in the Hantangang Valley in Jangheung-ri, Dongsong-eup, Cheorwon-gun. In the middle of the Hantangang River, a massive rock roughly 10 meters tall rises above the clear water. It also has a pavilion built during the reign of King Jinpyeong of Silla. This pavilion and the entire valley around Goseokbawi are collectively called Goseokjeong. Goseokjeong is said to have been the place where King Jinpyeong of Silla and King Chungsuk of Goryeo once visited and spent time enjoying the nearby scenery. Goseokjeong is also the best example of the geological unconformity created between the granite, the bedrock of the Hangtangang River Valley, and basalt. The area is highly valuable as a geological and topographical resource. You can learn about topography before the formation of the basalt lava field and how the basalt lava flowed over the bedrock to form the lava field. The granite bedrock was covered with basalt lava flows by volcanic activity that occurred between roughly 540,000 and 120,000 years ago when the bedrock was pushed to the surface. Over time, the basalt layer was eroded by the Hantangang River, exposing the granite bedrock once again and creating new waterways as a result.

Bidulginang Falls is a waterfall formed when the Hantangang lava field was eroded away by the Bulmucheon Stream from Bulmusan Mountain. It is called Bidulginang Falls because the surrounding terrain is in the shape of a hollow pocket like a pigeon’s nest. Another theory is that pigeons have been living in the caves around the waterfall since ancient times, giving it the name Bidulginang (pigeon’s nest). In any case, Bidulginang Falls provides an important clue to understanding the topography and geological formation process of the Cheorwon-Yeoncheon region, including caves, columnar joints, plate joints, gorges, and lava fields in the vicinity of the Pocheon Hantangang Columnar Joint Valley. In particular, Bidulginang Falls is a unique waterfall that shows how waterfalls are created in a lava plateau, and it is valuable as a resource for understanding the topography and geological formation process of the area near Hantangang River. Geologically and topographically, Bidulginang Falls gives you a chance to learn about features created by river erosion such as eroded caves, canyons, headward erosion, and plunge pools, as well as various geological structures such as columnar joints and plate joints. Moreover, Bidulginang Falls is an invaluable academic resource in that it is the perfect place to learn how just how much lava flowed along the Hantangang River area. During the Korean War, Bidulginang Falls was used as a hiding spot for locals and a place to recuperate for soldiers as it was hidden away by the thick forest and was hardly visible from the outside. Bidulginang Falls was designated as a natural monument in 2012, and its beauty and pristine environment attract countless tourists every year.

Pocheon Art Valley is a culture and art venue built inside an old rock quarry. Located in Giji-ri, Sinbuk-myeon, this granite quarry was used to quarry the “Pocheonseok” stone, which was renowned for its strength and beauty, for 30 years since the 1960s. Pocheonseok stones were used in buildings such as the Cheongwadae (Blue House), National Assembly Building, Supreme Court, and Incheon International Airport, which are major national institutions of Korea. Since the 1990s, as the quarry’s deposit of high-quality granite began to run out, it was abandoned and quickly fell into disrepair. The Pocheon-si City Government later turned the area into a culture and art venue. Pocheon Art Valley holds particular significance in that it restores a damaged natural landscape in an eco-friendly way and preserves parts of the past landscapes as they are, carrying on a sense of the modern industrial heritage of the area while creating a place to reflect on how human activity damaged the natural environment. It truly is a unique attraction where you can learn about the local history, culture, and art of Pocheon in one place.

Hwajeongyeon, one of the “Eight Scenic Views of Yeongpyeong,” is a 13-meter-tall granite rock rising above a pond. It is called “Hwajeongyeon” because its shape looks like a pile of hay in the middle of a pond. The deep pond created by Hantangang River, the dark-colored basalt cliffs, and the brightly colored rock pillars blend in together, creating one of the best topographical landscapes along the Hantangang River. Hwajeongyeon is an invaluable topographical resource as it allows you to learn about a variety of different topographical elements. Moreover, other topographical features, including basalt columnar joints, granite bedrock, sand, and gravel carried downstream by Hantangang River, add even more value to Hwajeongyeon as a natural resource. Since ancient times, records, including the Annals of the Joseon Dynasty, show that Hwajeongyeon was used for rainmaking rituals. Also, Hwajeongyeon has been featured in writings by Park Se-dang, Park Soon, Hong Yang-ho, Yi Hang-ro, and Yi Byeong-yeon, as well as real scenery landscape paintings by Jeong Seon, Yi Yoon-yeong, and Jeong Soo-yeong, which is why Hwajeongyeon holds significant value as a historical and cultural resource as well. In recognition of its value, Hwajeongyeon has been designated as a national cultural heritage site of scenic beauty by the Korean government.