"This underground tunnel connects Busan Station with Beaux-Arts Station."

The Underground Tunnel is a railroad tunnel which connects the railroad between Beaux-Arts Station, Next Generation Station and Busan Station. It was originally introduced on December 08, 2014.[1]

A total of 100 assets are needed to complete construction of both Underground Tunnels. This is equivalent to 100 Megabucks sm if one were to buy every asset instead of waiting to receive them from neighbors.


Assets (for both sections)

Underground Tunnel

Asset Image Amount Price Cost
Air ExtractorAsset Air Extractor 5x1 Megabucks sm5 Megabucks sm
Conductive ConcreteAsset Conductive Concrete 5x1 Megabucks sm5 Megabucks sm
High-Intensity LightsAsset High-Intensity Lights 10x1 Megabucks sm10 Megabucks sm
Hydraulic JackAsset Hydraulic Jack 10x1 Megabucks sm10 Megabucks sm
LoudspeakerAsset Loudspeaker 10x1 Megabucks sm10 Megabucks sm
Powder Fire ExtinguishersAsset Powder Fire Extinguishers 10x1 Megabucks sm10 Megabucks sm
50 Assets 50 Megabucks sm

Data (for both sections)

Level XP
0 100 Experience sm
1 500 Experience sm
Total/Max 600 Experience sm


SQ Internal Info:
  • Name: Подземный тоннель (вход) (translates to Underground tunnel (entrance))
  • ID: 71191 (railroad_tunnel1_place)
SQ Internal Info:
  • Name: Подземный тоннель (выход) (translates to Underground tunnel (exit))
  • ID: 71272 (railroad_tunnel5_place)


  1. SQ Forum: Update 12.08.2014
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