1h - Baikal. Streets of Vilnius. The soldiers are marching. Coat of arms of the Russian Empire. Photo by A. L. Chekanovsky and B. Dybowski. Taiga. Lake. The scientist measures the water level. Geographical Society Medals. 2h -Streets of Leningrad. Exhibits of the Zoological Museum. Photo by Semyonov Tien-Shansky. Great Hall of the Geographical Society. Kolyma mountains. Geologists pass the swamps in the Kolyma. Photo by Chersky. Arctic Ocean. Monument to Chersky, a mountain range named after him.