http://vienna-pyongyang.blogspot.com.au ... ation.html
Now we had officially entered North Korea via Tumangan!... After that a customs official came into our compartment. The other two remained as translators. We were each given a customs declaration form (in english). And of course we had to open our backpacks and had to show nearly every single item which was inside. ... He was very interested in our books and checked them, but they were quite harmless: A RZD timetable, a Russian railway atlas, a travel-guide about "Molvania" and so on.