The date marked on the inscription carved on the rock at Joss House Bay is the cyclical year of jiaxu of the Xianchun reign during the Southern Song Dynasty (1274), making this the oldest dated inscription to have been found in Hong Kong. The inscription records a visit to the area by a salt administration officer and his friend and relates the history of two temples, one to the north and one to the south of Fat Tong Mun.
Rock Inscription at Joss House Bay was declared a monument in 1979.