The rim of Schröter is heavily worn and eroded, with a wide gap in the southern wall and a deep indentation to the southeast.

A widely spaced row of tiny craters forms a line westwards from the north rim of Schröter.

In the 19th century, Franz von Paula Gruithuisen is noted for claiming that this area contained a lunar city (which he called Wallwerk), based on his observations using a small refracting telescope.

This inference was greeted with considerable skepticism by astronomers at the time, and, indeed, subsequent observations with more powerful instruments demonstrated that this was merely a natural feature.

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Schröter.