Railing (Underground Pass)

Railing is a quest item used in the Underground Pass quest. It is obtained by searching some fenced railings surrounding a unicorn's cage, and can then be used to dislodge a boulder, killing the unicorn, and providing the player with its horn. The horn is then used on a cauldron named the Flames of Zamorak in order to open the Gate of Iban and progress through the quest.