npr:

Seven time zones, nearly 6,000 miles, and a lot of tea and borscht. That only begins to describe the long journey by David Greene, NPR’s Moscow correspondent. He’s been in Russia for just over two years and for his last reporting trip, he’s riding the Trans-Siberian Railroad from Moscow to Vladivostok.

While crossing the world’s largest country and bridging two continents, he’ll make stops to capture the mood and the culture of Russia at an important milestone, two decades after the fall of the Soviet Union.

In the photo above, Sergei Tarkhov, a geology professor and Trans-Siberian veteran, stands near the zero kilometer mark at Yaroslavsky Rail Station in Moscow.

Tag along with Greene and NPR photographer David Gilkey as they see Russia by rail.