This tunnel is also known to be Miramar tunnel and use to consist of the Drainage system.
The san diego haunted tunnel is even worse than any nightmare. It is so much famous that every urban visitor visits the place very often.
This tunnel does not have much history but a favorite spot. People have visited the tunnel claims of listening to the screaming and terrifying voices all around the tunnel.
They witnessed of sounds of any woman and also a small girl calling her mother.