Inside Endurance Crater - Sol 169

La risposta al quesito posto dagli Amici della NASA con il precedente frame è 7, I "RAT's Holes" sono 7.

EccoVi la caption NASA originale:"NASA's MER Opportunity's RAT has nibbled 7 holes into the slope of Endurance Crater. This image from the Rover's NavCam was released previously (PIA06716) without the holes labeled so that Viewers could try to find the holes themselves. Here, the holes have been identified. Starting from the uppermost pictured (closest to the Crater's rim) to the lowest, the RAT's holes targets are:
1) Tennessee,
2) Cobblehill,
3) Virginia,
4) London,
5) Grindstone,
6) Kettlestone and
7) Drammensfjorden.
These holes were drilled on Sol 138 (June 13, 2004), 143 (June 18), 145 (June 20), 148 (June 23), 151 (June 26), 153 (June 28) and 161 (July 7), respectively. Each hole is 4,5 cm (about 1,8") in diameter".