The Clark family was here on Oahu celebrating their parents' 50th anniversary.
They were half-way through their vacation when they decided to go on a hike.
It was a popular trail in Manoa -- maybe a little muddy that day. And then the unthinkable happened.
"It really was like a natural disaster movie," said Lena Clark.
It was a fun-filled day for the Clark Family, here from Houston, Texas for the first time.
On Saturday, biking, then hiking up the Manoa Tunnel Trail.
The Clark's daughter and son -- Leila, 7, and Pierce, 4 -- were having a blast.
Lena Clark shot video as they approached the falls.
"All of a sudden we heard a snap. And like, pow, pow, pow. Everything started falling and crumbling," said Clark.
Someone yelled, "Run!" Then Lena watched as rocks rained down on them. A 15-pound chunk slammed into her daughter's back.
"Her head was rolling back, and her eyes were rolling back," said Clark. "She did lose consiousness and it was really tough. That moment I thought she was gone."
It took rescue crews an hour to reach them. Leila had six broken ribs, a collapsed lung, and a deep gash in her back.
"What are you feeling like Leila? My stomach hurts," said Pierce.
Five days later at the Ronald McDonald house, little Pierce is rooting for his older sister.
"You need to get well Leila, cause you're my sister!" said Pierce emphatically.
"It could have been a lot worse, so we're blessed to be where we are right now," said father Peter Clark.
In her hospital bed, Leila is getting plenty of love from staff, family, and friends back home.
"They just said 'Hi Leila hope you get better!'" said Leila.
She's making a speedy recovery. On Thursday, she was using a walker ahead of schedule. And she's already asking mom for a little more fun.
"Does this mean we're not going snorkeling?" said Lena.
At this rate, doctors say Leila could be out of the hospital in a couple of weeks. Her family says they are so grateful for all the support from trail guides, emergency crews, hospital staff and the Ronald McDonald house.
After a visit from therapy dog Tucker, Leila says she can't wait to get a dog too.