Lobang Jepang, Bukit Tinggi, West Sumatera, Indonesia.
The Japanese army made this a fortress as well as their military headquarters when occupying the BukitTinggi, west Sumatera area of Indonesia. So genius I think, with technology in that era that has not been like now. How do they breathe?
![144.png](https://steemitimages.com/DQmP3kkNnvkCzFgMeVrudA9NsXtC73bQKfATXiSrKQez7kP/144.png)
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![4.png](https://steemitimages.com/640x0/https://steemitimages.com/DQmbGvoNeeMz4kQ5eMwLsjNsgfRCFSyGRy1Wni9UcBBXUZu/4.png)
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