While climbing onto the roof of a building in the restricted area, the guest slipped and injured her leg around 8:30 p.m., officials said.
It was not clear where in the park the incident occurred.
A medevac was called to the park, although it was unclear if the victim was flown or taken by ground.
"We are proud of our public safety team, who risked their own safety to serve our guest," officials said.
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