The Cape of San Diego forms one border of the coastline landform. To the north of San Diego is a typical ria landform, where rock formations have been sculpted through erosion, abrasion, weathering, displacement, and other natural forces, forming mushroom-shaped rocks, tofu-like chessboard rocks, hive-like honeycomb rocks.

External link: http://www.necoast-nsa.gov.tw/user/Article.aspx?Lang=2&SNo=03000427