The Mountain Title Deed is a claim to the Deku Flower located beside the Goron Shrine in Goron Village. If Link approaches the Deku Flower, a Business Scrub will pop out from it. If Link speaks to the Business Scrub as a Deku, the Scrub will inform him that he is interested in returning home to the Southern Swamp. If Link presents the Swamp Title Deed, the Business Scrub will offer his own Deku Flower in return. If Link accepts, the Business Scrub will give Link the Mountain Title Deed and leave for his new Deku Flower in the Southern Swamp.
With the Mountain Title Deed in Link's possession, he can freely use the Deku Flower in Goron Village to fly to ledges within range, such as the ledge near the entrance to the Goron Shrine. Link can alternatively repurpose the Mountain Title Deed as toilet paper by giving it to ??? in the Stock Pot Inn's bathroom after midnight each night. Link can also trade the Mountain Title Deed to the Business Scrub inside Lulu's room at Zora Hall in exchange for the Ocean Title Deed. However, if he does so, the Business Scrub will move to the Deku Flower in Goron Village and Link will not be able to access it.
↑"Thanks for stopping! Who'd have thought I'd meet a fellow Deku in a place like this? I sell bomb bags, but I'm focusing on my marketing efforts on Gorons. What I'd really like to do is go back home and do business where I'm surrounded by trees and grass. But I can't open a business back home without following the proper procedures... Do you know what I mean?" — Business Scrub (Majora's Mask 3D)