Apollo 15 Hasselblad image from film magazine 85/LL - SEVA, Pre-EVA-1, EVA-1 &amp; 2.<br>A labeled version of this photograph is figure 5-67 of the <i>Apollo 15 Preliminary Science Report</i> (NASA SP-289, 1972), which has the following caption:<br>Presampling, oblique-to-Sun photograph, looking southwest, of near-field view of the large rock at station 2 and its secondary crater showing collection sites for samples 15200 to 15206, 15210 to 15214, and 15220 to 15224. Samples 15230 to 15234 were collected from under boulder, which was rolled to the west.<br>(Station 2 is at the base of Mons Hadley Delta.)<br>The text of the <i>Report</i> describes the boulder:<br>The boulder is anomalously large (approximately 1 m) for the area. Coherent fragments on the surface at station 2 are scattered in occurrence and generally do not exceed 10 cm in diameter. Much of the surface of the rock is covered by bubbly glass that has not been significantly abraded. Rock edges and corners, controlled in part by surface-fracture intersections, are sharp. The boulder lies on the south rim of a small, fresh crater that appears to open to the northwest. Apparently, the boulder impacted at a low angle from the north or northwest and rolled uphill onto the rim of its own secondary crater.
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2015-09-24 17:44
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