Complex sentence: Collapse associated with caldera formation may have been as much as 1,100 m.32--39 cubic km of magma was erupted, making the Kuwae eruption one of the largest in the last 10,000 years.
Split into simpler sentences: Collapse associated with caldera formation may have been as much as 1,100 metres. Around 32--39 cubic km of magma was erupted, making the Kuwae eruption one of the largest in the last 10,000 years.