Gta 5 Diamond Casino Heist Sewer Tunnel. Head into the underground tunnel. Photograph this for the sewer tunnel access point.
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A short distance from the casino there s a large storm drain. You are being let in and have to drive down the tunnel where your credentials are being checked and you are able to park the van. 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.
Head over there and go inside and take a picture of the sewer grate.
You are being let in and have to drive down the tunnel where your credentials are being checked and you are able to park the van. There s a sewer tunnel right across the street from the casino. Head into the underground tunnel. Sewer tunnel access point a short distance from the casino there s a large storm drain.
