For the Duration
, you know if there is an Aberration
, elemental, fey, fiend, or Undead
within 30 feet of you, as well as where the creature is located. Similarly, you know if there is a place or object within 30 feet of you that has been magically consecrated or desecrated. The spell can penetrate most barriers, but it is blocked by 1 foot of stone, 1 inch of Common
metal, a thin sheet of lead, or 3 feet of wood or dirt.