4730 The Chamber of Secrets 4730 The Chamber of Secrets is a Harry Potter set released in 2002 . The set features the chamber underneath Hogwarts which was created by Salazar Slytherin because he disagreed with the other founders about blood purity . Based on the second book / movie , Harry Potter and the Chamber of Secrets , recreated is the scene where comes face - to - face with a Basilisk and Tom Riddle . The set is comprised of the stone face of Slytherin through which the giant serpent emerges , Moaning Myrtle ' s bathroom , and the actual chamber , which includes Fawkes the Phoenix , the Basilisk , and Tom Riddle ' s diary splattered with black ink . The minifigure s included are Harry Potter , Ron Weasley , Ginny Weasley , Tom Riddle , and Professor Lockhart . Description . " The Chamber of Secrets " is one of the larger Harry Potter sets , and certainly one of the larger for the theme at the time . It is composed of four parts : 2 walls , the girl ' s bathroom , and the statue of the head of Salazar Slytherin . The parts can go together in different ways . At the back of the instructions are ideas for different things that can be made . Serpent Gate . This piece of the set , which forms the back wall of the chamber , is the portal though which the Basilisk emerges . As the serpent moves through , it pushes the double doors open . The gate is the face of Salazar Slytherin and has black eyes , and its mouth is shaped and coloured like a dark - grey beard . Moaning Myrtle ' s Bathroom . The girl ' s bathroom is the entrance to the chamber . It comes as a two - floor building . On the top level is a sink and a trapdoor which opens up to drop Harry Potter ( minifigure ) , Ron Weasley , and Professor Lockhart into the Chamber . The trap door opens as a ramp , and is covered with smooth tiles so that they slide down . The Chamber of Secrets . The actual chamber is made up of two sides that hinge together to make a long chamber . On the left part of the chamber , if you push a piece in two snake - panel doors are flipped opened . This will reveal the hidden sword of Gryffindor on Sorting Hat . On the right part of the chamber , pushing a lever will collapse two snake - panel walls . Both of the walls are covered in gaping snake mouths . They have snakes held up on the sides , and torches illuminating the walls . Along the tops of these are twin snake shields , with arches and towers . There is a small slot on each wall from which snakes can emerge . Minifigures . The minifigure s included are Harry Potter , Ron Weasley , Ginny Weasley , Tom Riddle and Professor Lockhart . Lockhart in his lilac robes is unique to this set . Ginny Weasley ( until the release of 4840 The Burrow and 4841 Hogwarts Express ) and Tom Riddle were exclusive to this set . The creatures Fawkes the phoenix and the Basilisk are also exclusive . Background . In " Harry Potter and the Chamber of Secrets " , students were being petrified and nobody knew why . After investigation , Harry Potter ( Minifigure ) , Ron Weasley , and Professor Lockhart journeyed into the Chamber of Secrets , where Lockhart betrayed them . After a shower of boulders , Harry was left to go on alone , where he found Ginny and Tom Riddle ' s Diary . He was forced to fight the Basilisk , which he defeated with the help of Fawkes and The Sword of Gryffindor .