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#Busosan #Shingung #MorningWide #JapaneseColonialEra #Tunnel #Mystery #RCCar #Unfinished #Air-raidShelter #Buyeo #Heritage #Cave There is a suspicious cave with a dirt-blocked entrance on the side of Busosan in Buyeo, the capital of Baekje. It looks like a waterway or an air-raid shelter. It is a narrow entrance that only a child can barely fit through. However, what the production team found after exploring was a large cement cave that gradually widened. People say that they have no idea when or for what purpose the cave was made. A cement cave discovered in a mountain with few people. What on earth is it? SBS 'Morning Wide Part 3' (broadcast on 2023.05.23)