Puysegur Trench

[2] The northern end of the trench rises to meet the Resolution Ridge off the south western tip of New Zealand's Fiordland and the Alpine Fault continues north as the plate boundary.

In July 2009, New Zealand's third-largest recorded earthquake (magnitude 7.8) struck close to the northern end of the trench off the coast of Fiordland.

Models have shown that the southern portion of the trench is capable of rupturing in a magnitude 8.5–8.6 earthquake.

[4] An 8.7 magnitude earthquake in the trench would create a tsunami as high as 7 metres in South Island's coasts according to a research in October 2011.

[5] As the subduction is south east to north west, the associated arc volcanism, which may be relatively recent in last known of manifestation at 50,000 years ago, is in the Solander Islands, which are visible from the coast of the Southland, New Zealand.