This crater is classified as a walled plain on the lunar surface, characterized by a relatively flat interior encircled by a ring mountain.

Its outer rim exhibits moderate erosion, retaining traces of a terrace structure albeit softened and rounded.

The inner wall appears slightly wider along the eastern side, possibly due to deposits of ejecta from nearby impacts.

The interior floor of Sommerfeld consists of a nearly level plain, likely smoothed out by deposits of materials over time.

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