Balmer lunar crater (upper left), Apollo-15 image AS15-M-2519. At the lower center part of the frame - satellite crater Hecataeus B.
Apollo-15 crew.
2016-02-10
<a rel="nofollow" class="external free" href="http://www.lpi.usra.edu/resources/apollo/frame/?AS15-M-2519">http://www.lpi.usra.edu/resources/apollo/frame/?AS15-M-2519</a>