Mexico's Popocatepetl volcano puts on a dramatic performance on Thursday.<br/> <br />The peak, known as "smoking mountain", is on phase two alert - the second-highest on the scale.<br/> <br />It's bad news for passengers at Mexico City's international airport, around 40 miles away.<br/> <br />Several airlines halted flights in and out of the Mexican capital leaving many passengers facing delays and cancellations.<br/> <br />This passenger says she might not be able to fly out until Saturday.<br/> <br />With up to 50,000 residents at risk from volcanic gases and lava flow, authorities are keeping a close watch over Popocatepetl.
