Land mines in Bosnia and Herzegovina
Land mine contamination in Bosnia and Herzegovina is a serious after effect of the Bosnian War, which took place from 1992 until 1995. During this time period, all 3 conflicting factions (ARBiH, HVO, and VRS) planted land mines near the current-day political entity borders.
Source: Wikipedia — Land mines in Bosnia and Herzegovina (CC BY-SA 4.0)