With the opening of Great American Revolution in 1976, Magic Mountain became the first park in the world to have a modern, 360-degree steel looping coaster (though previous roller coasters with loops had been built and dismantled elsewhere due to safety issues).
When it was built, there was very little in the way of surrounding brush.
Now, the tracks are surrounded by trees and bushes, which prevents the riders from knowing the track layout beforehand.
Universal then filmed a major movie at Magic Mountain with the Revolution as its centerpiece called Rollercoaster in 1977.

In 1978, Colossus, at the time the fastest, largest dual-tracked wooden coaster, opened.
Following its first season, it was closed and extensively redone.
When it reopened, it was a much smoother ride.
In 1991, the camel hump before the last, or third, turn was replaced by a block brake.
Though it decreased the speed of the ride after this particular brake, it did allow three trains to run per side at a time, greatly increasing capacity.
One of the trains sometimes ran backwards for a few years in the mid-80s.
However, until the late 1990s this kind of ride was no longer possible due to the newer ride system in place, as well as different trains.
During Fright Fest, the park runs one side backwards using a set of trains acquired from the now demolished Psyclone which was located on the other side of the park.
In 2015, the coaster was re-tracked with steel tracking and several inversions were added to the coaster.
It was subsequently rebranded "Twisted Colossus".
This renovation was completed by Rocky Mountain Construction.
With the opening of Great American Revolution in 1976, Magic Mountain became the first park in the world to have a modern, 360-degree steel looping coaster (though previous roller coasters with loops had been built and dismantled elsewhere due to safety issues). When it was built, there was very little in the way of surrounding brush. Now, the tracks are surrounded by trees and bushes, which prevents the riders from knowing the track layout beforehand. Universal then filmed a major movie at Magic Mountain with the Revolution as its centerpiece called Rollercoaster in 1977. 
In 1978, Colossus, at the time the fastest, largest dual-tracked wooden coaster, opened. Following its first season, it was closed and extensively redone. When it reopened, it was a much smoother ride. In 1991, the camel hump before the last, or third, turn was replaced by a block brake. Though it decreased the speed of the ride after this particular brake, it did allow three trains to run per side at a time, greatly increasing capacity. One of the trains sometimes ran backwards for a few years in the mid-80s. However, until the late 1990s this kind of ride was no longer possible due to the newer ride system in place, as well as different trains. During Fright Fest, the park runs one side backwards using a set of trains acquired from the now demolished Psyclone which was located on the other side of the park. In 2015, the coaster was re-tracked with steel tracking and several inversions were added to the coaster. It was subsequently rebranded "Twisted Colossus". This renovation was completed by Rocky Mountain Construction.
Six Flags Magic Mountain