 In particular, the term "Songguk-ri"-style pit-house is the typological name given to Middle Mumun Period dwellings in southern Korea.The site has been excavated a number of times by branches of the National Museum of Korea (Buyeo National Museum 2000; National Museum of Korea 1979, 1986, 1987).Groups of pit-houses are found in various spots in an area of almost 100,000 km².