caption: The image shows a geological map of the Russian Empire, with text and numbers indicating the various geological features of the region. The map is filled with intricate details, such as mountains, rivers, and other geographical features, all of which are labeled with their respective names. The colors used are mostly shades of green, brown, and yellow, with some hints of blue and red. The text on the map is written in a bold font and is surrounded by a thin black border.