Iron Clapper
From WikiRaider
The Demon's Heart is found under the roots of Gallows Tree. It is needed to gain access to the final part of the level. The demon hanging from the gallows tree wanted it returned to his body but this never happened.The Iron Clapper' is found in Gallows Tree. It is used by Lara to repel a group of Small Demons since Father Patrick Dunstan told her previously that demons are allergic to iron.
