“ Oh, fine! If you're going to pout like that, you can have it. It's yours! ”
—Miner in Haunted Mansion
Unbreakable Wire (丈夫なハリガネ, Joubu na Harigane, lit. Strong Wire) is an event in Tomba!.
Find an unbreakable wire.
Talk to the digger twice inside the small building where the fortune teller in the The Blue Fortune Teller event can be found in order to activate the event.
After doing so, travel to the fountain room in the Haunted Mansion, where a miner will hand you the wire.