Complex sentence: As depicted on screen, Clavius Base features some surface features (a landing pad and control tower, together with other ancillary support structures), but the vast majority of the base is located beneath the Lunar surface to protect it from micro-meteoroid impacts and solar radiation.
Split into simpler sentences: As depicted on screen, Clavius Base features some surface features (a landing pad and control tower, together with other ancillary support structures), but the vast majority of the base is located beneath the Lunar surface. Most of the base has been built underground to protect it from micro-meteoroid impacts and solar radiation.