Complex sentence: It will be the first ever landing on the lunar far side, an unexplored region of the Moon called South Pole-Aitken Basin, a vast basin in the southern hemisphere of the far side which extends from the South Pole to Aitken crater.
Split into simpler sentences: It will be the first ever landing on the lunar far side. The planned landing site is on the region of the South Pole-Aitken Basin, a vast basin in the southern hemisphere of the far side which extends from the South Pole to Aitken crater.