Archaeologists have discovered a 1,400-year-old ice storage chamber at the site of one of South Korea's most historically significant royal castles.
The underground facility, known as a "bingo", is the oldest known facility of its kind and offers an unprecedented look into feudal Korean culture's architectural complexities and advancements.
Researchers uncovered the ice storage bunker while conducting the seventeenth excavation survey.
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Author's summary: Ancient ice storage chamber discovered in South Korea.