Comment by MenhirMike

This is going to be the plot of a Bruckheimer/Emmerich co-production, is it? A team of scientists needs to travel into the heart of a volcano to find the lost city of Lithium, but one of them is actually a spy for a foreign power that will try to kill everyone else to prevent the secret to get out, only to be thwarted by the lone survivor, a man who was recently divorced by his wife and just wants to see his children again. He finds another (female) survivor, and together they defeat the spy mastermind and are evacuated by the US Military mere seconds before the volcano erupts.