Drygalski is a large lunar impact crater that lies along the southern limb of the Moon.

The location of this crater restricts its observation from the Earth, and even under conditions of favorable libration it is viewed from the edge.

It is only illuminated by the Sun at an oblique angle, and it lies close to the south polar craters that are permanently shielded from sunlight.

There is a small catena, or crater chain, beginning tangentially the northern outer rim then arcing to the north towards Boltzmann.

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