Across Daegu-myeon in Gangjin County, an astonishing 183 kiln sites where Goryeo-era celadon and pottery were once fired lie scattered across the landscape. Of these, 98 that remain well preserved have been designated and are managed as national historic sites, with 43 kiln sites identified in the Sadang-ri area alone. Another 75 survive in Yongun-ri, 59 in Gyeyul-ri, and 6 in Sudong-ri — together showing that this entire region once functioned as one enormous ceramics production complex. The combined area of all the kiln sites exceeds one million square meters, roughly equivalent to 140 soccer fields laid side by side.
Among all these sites, the kilns at Sadang-ri's Dangjeon village hold a particularly special status. Most of these kilns operated from the early 12th century through the 13th century, and the ceramics they produced are considered representative of Goryeo celadon at its absolute peak — displaying the finest achievement of both "biseok," the soft jade-green glaze unique to Goryeo celadon, and sanggam, the distinctive inlay technique used to carve and fill decorative patterns. It's a quiet rural village today, but 800 years ago, this area was an industrial zone mass-producing some of the most sophisticated craft objects on the Korean peninsula.