In one moment, a column of soldiers and military pickups creeps along a dirt road in western Mexico. In the next, a massive explosion sends debris and a body flying.

The ground where a soldier stood seconds earlier is a gaping hole, the aftermath of an improvised land mine planted by one of the region’s warring drug cartels.

That soldier was killed and four others were injured in the January explosion, which was captured in a grainy video that circulated on social media. Then last month, four more soldiers died and nine others were wounded when another explosive device detonated in the same region.

This week, three laborers were killed and two others injured by yet another mine, leaving a truck split in half and human remains scattered across a dusty road.