ANTIOQUIA (Reuters) - On the Colombian hills of Antioquia, taking the wrong step could cost you your life.

It's something that is always on Noralba Guarin's mind.

"One kneels down at the start of the day, the first thing you think is that I know that here in front of me, there could be mines where I haven't yet cleared."

She's one of many fighting a new war in Colombia: a war to find and remove landmines.

The government estimates that nearly 7 out of every 10 municipalities have landmines, but no one knows exactly where or how many there are.

With a final peace deal expected soon between the government and the rebel group FARC, which planted the mines, demining the country remains a crucial step forward.

For Wilmar Gil, the work is personal. He was 14 when his father stepped on a landmine while tending crops.

"It made me very sad seeing him like that. I think that this is something very, very inhumane. It's very barbaric."

The peace deal could pave the way for Colombia's 6.7 million displaced people to return home, but unless the lands are cleared of mines, many will be too afraid to go home.