Land mine

Land Mines are explosives placed underground that detonate when enough pressure is placed on them. At least two types of Land-mines exist: Anti-Tank Mines and Anti-personnel mines.

Usage
During the Peace Walker Incident in 1974, Big Boss and his mercenary group, the Militaires Sans Frontieres, procured design specs for M15 Anti-tank landmines after capturing some items at Bosque del Alba. They later made use of these mines while attempting to capture some APCs/Tanks, as well as improved upon the design. They later procured designs for a Fulton Mine system after stopping soldiers from being fultoned out.

During the Outer Heaven Uprising, the Outer Heaven forces utilized anti-personnel landmines in Desert 1's region, presumably for Desert Warfare training. Solid Snake made use of these landmines to destroy an Outer Heaven tank that was in his way.

During the Zanzibar Land Disturbance, Zanzibar Land utilized M78 Anti-Personnel landmines in the Nariko Desert. Solid Snake made use of these landmines when fighting against Running Man to use his speed against him.

In-game weapons description
"A potent anti-vehicle mine capable of dealing heavy damage to the undercarriage of a large vehicle. One solid direct hit can cause enemy vehicles to grind to a halt temporarily. An extremely valuable tool in combat against vehicles, but it takes a certain amount of weight to trigger it, rendering it ineffective against hovering vehicles. Consider what types of enemies you'll be facing before deciding to take this weapon into battle."

- Anti-tank Mine description from Metal Gear Solid: Peace Walker

"A non-lethal personnel recovery weapon that combines a sleeping gas release system with the Fulton recovery system. This is an incredibly handy tool to have - just plant it and watch it gather new recruits for you."

- Fulton Sleep Gas Mine description from Metal Gear Solid: Peace Walker