Detect a Secret Door or Compartment

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Senses. When you seek evidence of a hidden or secret door, portal, or compartment, you usually make a Wisdom (Perception) check against the specified DC. (82) See examples.

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• Sufficiently describe your search.

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• An obscured area can give you disadvantage.

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• Moving at a fast pace can give you disadvantage.

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• Proficiency with certain tools sometimes helps.  

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Logic. Sometimes senses are not enough. You need to make an Intelligence (Investigation) check instead of, or in addition to, a Perception check. (81) See examples.

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Lore. A lore-based Intelligence check might help in certain situations. (81) See examples.​​​​ House Rule: You can attempt an Intelligence (Arcana) check to detect a door that is magically hidden. (195)