Painted and inscribed on flat stones
Abhorrent to the deep ones
Abhorrent to their great father
Is the symbol to guard against Dagon 

Created by the elder things
Long ages past
To guard against Dagon and his spawn 

No deep one will cross a threshold
that has the symbol painted upon it
No deep one will follow a path
that has the symbol upon it
No deep one will emerge from a beach
that is strewn with stones
bearing the sacred symbol 

By this sign those who dwell
near their submerged city of cyclopean stones
are not molested unless they venture into the waves
where the deep ones exact
a terrible vengeance upon them