In AD&D 1st edition, what is the difference between a concealed door and a secret door?


1 Answer 1


They are defined on p97 of the Dungeon Master's Guide

Concealed doors are doors hidden in some way:

  • Behind a curtain
  • Covered with plaster
  • Trap door under a rug

A PC can normally find a concealed door just by checking his surroundings well.

Secret doors are portals that look like a normal wall to the naked eye. Typically it takes more effort to discover a secret door.

  • 4
    \$\begingroup\$ @Stewbob - no problem. The first edition rules are jam packed with information, but finding the one particular datum you need can be a trying experience sometimes! \$\endgroup\$
    – Pat Ludwig
    Commented Oct 16, 2010 at 3:43
  • 1
    \$\begingroup\$ Trap door under a rug is so cliche' that as soon as you say there's a rug in a room, players ask to look under it. :) \$\endgroup\$ Commented Oct 21, 2010 at 19:06
  • 1
    \$\begingroup\$ @stefano true, but every so often they get lazy at the wrong time. :) \$\endgroup\$
    – Pat Ludwig
    Commented Oct 21, 2010 at 19:14
  • 2
    \$\begingroup\$ I commonly rule that a Thorough (time-consuming) Search automatically finds all Concealed doors, but Secret portals require the usual die-roll checks. \$\endgroup\$
    – ExTSR
    Commented Jan 8, 2011 at 22:31
  • 1
    \$\begingroup\$ @stefano: I don't tell them there's a rug unless they ask about the floor specifically. \$\endgroup\$
    – jeffszusz
    Commented Jan 28, 2011 at 15:06

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