The four House dormitories have secret entrances , generally known only to members of that house .
The four House dormitories require a password ( Gryffindor & Slytherin ) , riddle answer ( Ravenclaw ) or ritual ( Hufflepuff ) in order to gain entrance .
The four House dormitories have secret entrances , generally known only to members of that house and require a password ( Gryffindor & Slytherin ) , riddle answer ( Ravenclaw ) or ritual ( Hufflepuff ) in order to gain entrance .