Seoul, South Korea

Free-standing double loop Tunnel. Designed for convenient access, with parking facilities, a hotel, and green spaces.

Features:

Enlarged by 505 mm 1,66 ft glass section on Flight Chamber
Lower air duct clad with noise-absorbing materials

Diameter	4.5 m 14.8 ft
Model	Pro-fly 4.5 Double with modifications
Area	6,000 m² 64,583.5 ft²
Opening	26 January 2019