Trans-Siberian Railway is expected to extend to Sakhalin Island across Tartar Strait, and then is planned to extend to Japan's Hokkaido beyond La Pérouse Strait. If this railway opens, shipping time will be drastically minimized.
But, the problem is that almost all the freights on rail in Japan are transported with 1067mm gauge, while Russian freights are transported with 1520mm gauge rails. It means there must be gauge-changing point or the place to load or unload feights is needed.
I'm interested in where such points will be placed.