The movie is called volcano
Out of nowhere, yellow gas began spewing from the tunnel's opening. It was scorching hot and caused serious harm to the workers inside. When the management in charge came to check it out, they went into the tunnel, but more gas leaked, so they had to run out.Then, another girl arrived to investigate. She used a machine and discovered there's a volcano under the city. Nobody believed her at first, but she didn't give up. She and her assistant went back into the tunnel for more investigation.
While her assistant was collecting gas samples, a huge earthquake hit. The assistant fell into a pit. The earthquake wrecked everything and made the volcano start erupting lava, burning everything in its path.The management team quickly worked to build barriers to stop the lava. They also used helicopters to pour water on the lava, trying to cool it down