Underground City

Walkthrough
When you talk to the construction worker you will ask him, "Why are you digging up the fountain?". He will respond with, "We discovered a city below Falador. Wanna help?". You choose, "Yes". He will tell you to climb down the hole. It will show a cutscene of you throwing the rope and climbing it, about half-way there the rope will break and you'll fall the rest of the way. The cutscene ends with you landing flat on your face, while the construction worker lands on you hitting you for -1 damage. Next, you will be in front of a pile of rocks click on the rocks, you'll break through. This happens 5 more times. In the final room you see a mutant zombie.

The Battle
When battling the mutant zombie it is best to have at least level 65 combat! The zombie uses melee but only hits up to 605, so Mithril to Runite armour is best. Once you beat it climb out.

Reward

 * 10,000 coins
 * Access to Ye Olde Falador