The 3rd Tunnel (Dorasan Observatory) (제3땅굴)
| Item List | Contents |
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| Image |
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| registration date | 20040312033452 |
| Modified date | 20210518190524 |
| address | Je3ttanggul-ro, Paju-si, Gyeonggi-do |
| type | Culture/Art/History |
| area code | Gyeonggi-do |
| tel | +82-31-940-8526 |