<p>Apollo 11 Hasselblad image from film magazine 40/S - EVA<br>
The NASA Special Publication 246, <i>Lunar Photographs from Apollos 8, 10, and 11</i> (1971) has the following caption for this photo:<br></p>
This almost-perfect outline of the traction cleats on the astronauts' boots implies that the lunar soil has a very fine texture. A more coarse material would not have permitted the appearance of such a fine detail.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/136485307@N06">Project Apollo Archive</a>
2015-09-23 16:00
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/projectapolloarchive/21039138323/">AS11-40-5880</a>