Gta 5 Diamond Casino Heist Sewer Tunnel. You can just put explosives on the wall which leads to the vault security lobby area and then head directly into the mantrap leading to the vault. This is an optional approach specific prep mission but it will make your finale much easier and faster.
Then go down to the vault area proceed through the manhole. Head over there and go inside and take a picture of the sewer grate. Tunnel boring machine is an optional prep mission featured in grand theft auto online as part of the the diamond casino heist update.
Photograph this for the sewer tunnel access point.
Sewer tunnel access point a short distance from the casino there s a large storm drain. Gta casino heist access points. Get into the gruppe sechs van and drive to the casino to the security tunnel. Where is the sewer in gta for the diamond casino heist.
