[1] Features of this class are commonly termed walled plains, due to their appearance and dimension.

It is located just to the southeast of another huge walled plain, Korolev, a formation nearly double the diameter of Galois.

This is a heavily eroded feature with a rim that has been reshaped by impacts, particularly along the northwest edge where it lies near Korolev.

The rays from this impact are the most prominent to the north, where they cross the floor of the crater Mechnikov.

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