From Guild Wars Wiki
Splinter Mines are part of the environment in the Elona Reach mission. They have the appearance of a shriveled plant and react when party members approach. A glowing circle similar to a ward will appear, and after 5 seconds, Splinter Mine skill will be activated, inflicting Crippled and Bleeding on every creature within the circle, both ally and foe. The Splinter Mine will continue activating the effect every 3 seconds, until anyone uses it, removing the core.
Once the Splinter Mine is used, the Splinter Mine will trigger the effect for a last time, so anyone getting it should get out of the area, and the player will get a Splinter Mine bundle item, which, once dropped, will activate the Splinter Mine skill once against foes only in the player's location after 3 seconds aproximately.
Anomaly.
[edit] Location
Crystal Desert
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Splinter Mine (skill)
Anomaly.
