Complex sentence: The headstone was therefore moved approximately 20 metres to its present location, next to the monument to Daniel Defoe: it was also rotated through 90 °, so that it now faces south rather than west.
Split into simpler sentences: The headstone was therefore moved approximately 20 metres to its present location, next to the monument to Daniel Defoe. It was also rotated through 90 °, so that it now faces south rather than west.