In the meantime, here's an idea tinkering around with an old unmade attraction concept.
Geyser Ridge
(Drop ride)
Not many would dare to brave the dangerous blasts of Geyser Ridge to mine for gold, but Phineas Q. Pluvium is just crazy enough to try! Climb into one of his mining trawlers and drive deep into the mines, but beware: the wrong turn might send you into the crossfire of a geyser!
As you can guess, I saw the old concept of Geyser Mountain and the core idea would make for a fun thrill ride in Frontierland. Of course, I tried thinking up a backstory for it. In my idea, Geyser Ridge is a dangerous piece of land, home to geyser blasts that have threatened the stability of most mining companies that tried to set up there. Phineas Q. Pluvium, however, decided to take that challenge. Whereas men like Barnabas T. Bullion would deal with problems by throwing manpower at them, Phineas sought to use genius and technology to conquer the natural risks. He carefully designed his tunnels to take advantage of the geysers, using them to literally flush the gold out. Thus, trawler carts can roll through and collect these goods. Helping to control these geysers are tall towers housed with pipes to help divert some of the water from the geysers.
The queue would take you through the main offices of the Pluvium Mining Corporation, winding past the front office and through the halls. Signs advertise the great promise of wealth for the workers in comparison to Pluvium's competitors, along with some warning workers about potential cave-ins and geysers blasts. Maps help to outline the mining system, with its network of tunnels designed around the geysers, along with schematics showcasing the trawler carts. Eventually, you reach the loading docks, with chambers for each trawler cart. A modified voicepipe offers message from Phineas, thanking us for our courage in taking on this dangerous job for him. Eventually, you are loaded onto your trawler cart, and the metal doors in front of it close.
Your trawler cart winds down the mine shaft, the roar of geyser blasts echoing down the caverns. One large rumble sounds, as the cart approaches its intended turn...only to discover the shaft has collapsed, with a rail switch struck. You're instead diverted down a different shaft, with warning signs telling to turn back. You enter a wooden structure, perhaps one of the towers you witnessed outside. Another rumble emerges, shaking the trawler cart, and up you go! You're flying up on one of the geysers, sending you up to the top and peering out of a window over Frontierland! You dive up and down, until the geyser settles and it feels as if the trawler cart has snagged onto some track. It rolls out of there, working towards a new set of doors as one of Pluvium's attendants is there to help let you out.