She was hiking with her sister when a loose boulder gave way causing her to fall down the trail.
"It hurt pretty bad," said Monica Williams.
Williams thought she might have broken her leg, but she's okay after a big fall on Piestewa Peak Sunday afternoon. She was heading down the mountain when it happened.
"I stepped down on what I thought was a regular rock on the trail, but it turned out to be a big boulder that was loose, and it rolled and I rolled with it," he said.
Williams thinks she fell about 100 feet.
"And then when I finally stood up, it was just this intense feeling like all my muscles were being torn to shred," said Williams.
And that is about when Williams and her sister decided to call for help.
Firefighters hiked up the mountain and had to bring her down by helicopter.
Williams' sister snapped a photo of fire crews as they brought her down the mountain.
"Actually it wasn't scary, they called it the screamer seat, but I didn't scream... they did an amazing job, I never once felt like I was going to fall, I never once thought they were going to let me go," she said.
And she has nothing but praise for the fire crews who hiked up Piestewa Peak to help.
"Just everything was so well done, they were just amazing, none of them thought for a second thought about themselves," said Williams.
Williams was taken to the hospital to be checked out; she walked away with some bumps and bruises.