2012 saw the biggest expansion since 2005, when three new rides were brought to the park. These included a Zierer kiddie coaster and an SBF/Visa Ferris wheel, both relocated from a park in Canada. The major addition was the Cliffhanger roller coaster, relocated from the closed Celebration City in Branson, Missouri. The coaster saw a grand opening in June of that year. At an elevation of above sea level, it is the highest-elevation, full-sized roller coaster in America. In 2013, it was revealed that the park was working on an expansion of the upper part of the cave system. With this expansion, the single cave tour was split into two smaller 40-minute tours, allowing increased capacity. The tramway undertook its own expansion, adding two more pulses; this brought the total to six, with eighteen cabins in all, the maximum efficiency of the tramway. The next ride came in 2014, an SBF/Visa custom swing named Glenwood Canyon Flyer, installed as a milder alternative to the Giant Canyon Swing. It made an appearance on the show Thrill Factor in 2015 in "Kari Has No Sense". Early 2017 brought an official announcement of the next new ride, the Haunted Mine Drop, which opened in the summer of that year. The drop tower is the first in the world to drop underground and the first to start at the top instead of at the bottom and features prominent themes in addition to the drop. The park is also expected to receive two new "adventure vehicles" that will join the one the park received in 2016. The purpose of the vehicles is to provide alternate transportation up the mountain, replacing the buses that the park uses for inclement weather. These vehicles will also be used to relieve congestion of the tramway, as it has reached maximum capacity.
