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'''Caltrops''' is a Defensive [[Demon Hunter skill]] unlocked at [[clvl|Level]] 4. The Demon Hunter lays a trap of caltrops on the ground that right at her current location. The trap lays dormant until a monster comes near, at which point it activates when , creating an effect (which varies with the runestone) which debuffs any enemy approachesthat enters the area of effect.  There is no limit to how many Caltrops you can drop, slowing all nearby enemiesother than that provided by running out of [[Discipline]]. The effect of multiple Caltrops does not stack, so there's no point in casting two that close together, though it can be very useful to spread multiple traps around to increase the area of effect. 

The following is a very quick summary. See the [[Caltrops rune effects]] page for a more thorough description of rune effects, or any of the individual rune pages for numbers, screenshots, blue quotes, and much more.

'''The concept of the Demon Hunter using traps and other devices to hinder or attack monsters has been in the game since the very beginning. Caltrops''' was first seen at the [[July 2011 Press Event]], where it was a level 1 skill. Unfortunately, no information about the skill's function was availableat that time.