Fun fact. I wanted to trap my level 12 party in a dungeon, one of them had disintegrate. So I engraved a reflecting effect in the door. Any direct one target spell casted on the door would bounce back. It would take 3 spells used that way to empty the magic of the door.
Sadly, he never casted disintegrate on it. Sad DM noise.
But DAM its hard to trap a high level party anywhere.