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These craters mark earth´s lowest known subaerial volcanic vents
Volcano Gala Ade (or Kebrit Ale) (19.60 mi / 31.54 km)
Erta Ale (50.19 mi / 80.78 km)
Afar Depression (51.61 mi / 83.06 km)
volcano Ma Alalta (or Pierre Pruvost) (84.53 mi / 136.03 km)