As they neared the Lava Mine City, the towering mountains within their sight became more numerous.
Compared to the other Giant Cities that Li Yelai had visited,
the region where Lava Mine City was located had a higher proportion of mountainous areas.
After all, before the Calamity, this region was known as "seven mountains, one river, two fields."
If one was to take the trading route, a trip to the Lava Mine City would involve not only circumventing mountains but also traveling on a water route, which was quite troublesome.
However, those aboard the Netherworld Train need not worry about these obstacles.
The train had the formidable ability to carve out passageways; facing a large mountain, it would not swerve but instead charge straight through it, tunneling through the mountainside.
In passing, it would also create a tunnel, making the route more convenient for the caravans behind, at least saving them the detour around the mountain.
