The Sparksocket Minefield is located to the west of K3 and Ricket's Folly in the southern foothills of the Storm Peaks. Janks is stuck in the center of the minefield with , resorting to "tending the turrets". The site is littered with mines that do 500-600 damage and knock you back several hundred yards.
You can earn the achievement , by blowing up 10 mines consecutively without hitting the ground. This is slightly untrue however. There is a small grace period once you hit the ground in which you can run to another mine and keep the chain going. It is best to start in the center and keep the chain going until either A: you are about to die, or B: you get the achievement.