"It’s really, really hard to watch the survivors and their pain and trauma," writes Luis Robayo on covering the Colombian landslide that left more than 300 people, including some 100 children dead.

"There are many people who have lost six, ten or more relatives. Not to mention friends, neighbors and acquaintances who also died. Out of all the things that I have covered — the armed conflict in Colombia, protests, mine collapses — this is by far the hardest."

"You smell the overpowering stench of dead bodies, you hear rocks cracking, machines working. At times you hear weeping, at times you hears screams, when people see the body of a relative or of friend. And there is a heavy blanket of sadness and pain that seems to envelop the entire site. Sometimes a burst of joy, when people are reunited with their loved ones, pierces through the sadness."