angela catina is worried about what will happen to the flat parts of the east bay where the soil is unstable>> it would be like walking along jell-o or quick sand. >> reporter: which brings us back to the crack that runs underneath old city hall. it was discovered in 1972 but the city decided not to fix it, instead to leave it as a reminder of the threat underneath our feet. >> we have to live around it, so we should be more aware of it and be prepared for an event when it will occur. >> what a visual reminder there. >>> 4:53 for you right now this morning, coming up on today in the bay, nbc bay area responds. >> lots of people are asking questions about whether the price of gas is going up because of the fire. nbc bay area responds next. >>> first, happening now, turkey's offensive against kurdish fires in northern syria continues. new explosions on the syrian side of the border, sending thick clouds of smoke in the air. the offensive has caused tens of thousands to flee their home and russia is moving to improve their role as a power broker after president trump ordered the withdraw of for