The crest of the Port Hills varies somewhat in height, being lowest at the eastern end. Two road passes traverse the Port Hills from Christchurch. Dyers Pass (elevation c. 330 m), almost due south of central Christchurch is the more prominent of the two passes. Evans Pass (elevation c. 200 m), which is near the eastern end of the Port Hills, normally connects Sumner and Lyttelton but was closed since the 2011 Christchurch earthquake caused significant damage to Sumner Road on the Lyttelton side of the pass until reopening in 2019.