![](https://thinkaboutit.site/underground/wp-content/uploads/sites/18/2013/04/259669004_573c887486.jpg)
Mongolia’s Underground [google_map_easy id=”15″] Location: borders of Mongolia and China Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: The underground City of Shinhwa exists beneath the borders of Mongolia and China. Source: Location: Mongolia Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: Source: