Wikipedia
Dobrovol'skiy (crater)
Dobrovol'sky is a small lunar crater on the Moon's far side. The northwest part of its rim is intruded upon by the somewhat larger crater Shirakatsi, and the outer rampart of that feature covers most of the interior floor of Dobrovol'sky. Very little of the original floor now survives, with a small section near the southern inner wall. The remainder of the crater rim is somewhat circular and only mildly worn.
To the north the southern rim of the much larger crater Perepelkin is intruded upon by Shirakatsi, and the three form a brief, curving crater chain. To the southeast of Dobrovol'sky is the crater Volkov.
It is named after cosmonaut Georgiy T. Dobrovolskiy who died in Soyuz 11 mission.