The latest eruption was preceded by seismic rumblings which began on April 8.
 
The Nevado del Huila, which is topped with a crown of ice, is Colombia's third-highest peak.
 
In 1985, the town of Armero was destroyed and 25,000 people were killed when another volcano, the Nevado del Ruiz, exploded and set off a series of mudslides.