Mongolia (Into the Future)

Mongolia is the 4th stage in Into the Future.

Reference

 * http://battlecats.spica-net.com/chapfuture1/s01.html
 * http://battlecats.spica-net.com/chapfuture2/s01.html
 * http://battlecats.spica-net.com/chapfuture3/s01.html