10 World's Longest Metro Tunnels

Longest tunnel competition: Asia=7, Europe=3.

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Top ten longest subway tunnels in the world:
1. Guangzhou Metro Line 3
2. Beijing Subway Line 10
3. Seoul Subway Line 5
4. MRT Downtown Line, Singapore
5. Serpukhovsko-Timiryazevskaya Line, Moscow
6. Madrid Metro Line 12
7. Toei Oedo Line, Tokyo.
8. Kaluzhsko-Rizhskaya Line, Moscow
9. MRT Circle Line, Singapore
10. Busan Subway Line 2

CC BY:
박창현, https://youtu.be/UebMGOI9mYM
Sophia Kovaleva, https://youtu.be/uDFpXvQbgFA
Ray in Manila, https://flic.kr/p/WA3eL1
SBS2831G Transportations, https://youtu.be/FmADOqplpeU
Betty Sham, https://youtu.be/bnSbWu6UNtA
Moscow subway, https://youtu.be/Ec8szDjtGUM
TGVくんゆっくり SPちゃんねる, https://youtu.be/E4fzDh57vU8
Ricardo Ricote Rodríguez, https://flic.kr/p/95evwx
CityRailways, https://youtu.be/l1fVVAtEwCs
yeowatzup, https://flic.kr/p/ebEcq
Dem Transport, https://youtu.be/Z3ccfqHLGi4
Travelstar98 Gaudi, https://youtu.be/EY5A8I7oHTo
Kong Yuen Sing, https://youtu.be/ZukCm4VZ6Tc
PJH Films from KOREA, https://youtu.be/-F-Sn1lxvt8
PatMax Adventures, https://youtu.be/gRm-amAG790
Micah Sittig, https://flic.kr/p/4z4bz8
klarititemplateshop.com, https://flic.kr/p/7GfMPZ
whatleydude, https://flic.kr/p/9DnUNm
Thompson Fang, https://youtu.be/uZkEe7tpLK8
bfishadow, https://flic.kr/p/92BWJf
John K, https://youtu.be/8F08Fy_CcjQ

Disco Medusae Kevin MacLeod (incompetech.com)
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