The Nevado del Ruiz volcano is causing concern due to increased seismic activity. The Colombian authorities have raised the alert level to orange, the second-highest level on a four-stage scale.
Colombia Authorities Evacuate Families Near Nevado del Ruiz Volcano Due to Rising Alert Level Following elevated levels of seismic activity at Nevado del Ruiz volcano in the country's center that could indicate an eruption in the next few days or weeks, Colombia authorities evacuated 40 families from their homes on Monday, AP reports.