Batu Lubang Tunnels, Sibolga, Indonesia
This tunnel was made by the Dutch centuries ago when they colonizing Indonesia. The tunnel connects Sibolga and other cities of its East. What so unique about this tunnel that it was crafted behind the water fall, in a way that the water from water penetrating to the tunnel wall and make it wet and cold. It’s a series of two short tunnels, and each tunnel is behind a different waterfall. The passage is so narrow that cars or even container who want to go through this tunnel need to take turn and blow the horn every time they arrived at the entrance of the tunnel.
Click here for original comment on TripAdvisor website
Click here for original comment on TripAdvisor website