 From the perspective of the Earth , this crater lies along the southern limb of the Moon , making observation difficult . Detailed mapping of the polar regions and farside of the Moon did not occur until the advent of orbiting spacecraft . Shackleton lies entirely within the rim of the immense South Pole @-@ Aitken basin , which is one of the largest known impact formations in the Solar System . This basin is over 12 kilometers deep , and an exploration of its properties could provide useful information about the lunar interior . 
 From the perspective of the Earth , this crater <a href='uninflect' title='1'><mark>lies</mark></a> along the southern limb of the Moon , making observation difficult . Detailed mapping of the polar regions and farside of the Moon did not occur until <a href='None' title='2'><mark>the</mark></a><a href='negative_concord' title='3'><mark>advent</mark></a> of orbiting spacecraft . Shackleton <a href='uninflect' title='4'><mark>lies</mark></a> entirely within the rim of the immense South Pole @-@ Aitken basin , which <a href='drop_aux' title='5'><mark>is</mark></a>one of the largest known impact formations in the Solar System . This basin <a href='drop_aux' title='6'><mark>is</mark></a>over 12 kilometers deep , and an exploration of its properties could provide useful information about the lunar interior . 
From the perspective of the Earth , dis crater lie along the southern limb of da Moon , makin observation difficult . Detailed mapping of tdapolar regions and farside of the Moon did not occur until no advent of orbiting spacecraft . Shackleton lie entirely within the rim of the immense South Pole @-@ Aitken basin , which one of the largest known impact formations in the Solar System . This basin over 12 kilometers deep , and an exploration of its properties could provide useful information about the lunar interior .