From Old School RuneScape Wiki
SMW Subobject for EntranceUses infobox: SceneryObject ID: 9739Image: File:Crevice (Heroes' Guild - Entrance).pngIs members only: trueIs variant of: Crevice (Heroes' Guild)
SMW Subobject for FountainUses infobox: SceneryObject ID: 9740Image: File:Crevice (Heroes' Guild - Fountain).pngIs members only: trueIs variant of: Crevice (Heroes' Guild)
The crevice is a two-way Agility shortcut that allows quick access to the Fountain of Heroes in the Heroes' Guild basement. The ability to use this shortcut is unlocked upon completion of the hard tier of the Falador Diary, provided the player also has 67 Agility and has completed Heroes' Quest to access the Heroes' Guild.