"This journey is taking forever!" a bespectacled orange unicorn filly complained.

"Come on cuz! it´s not so bad!" a light green pegasus filly replied above her head.

"Easy for you to say, Rainbow. You have wings."

"Living in the city has certainly sour your attitude, CA."

"Don´t call me that way."

"Cinnamon Apple! Rainbow Leaf! Come here!"

"Coming Uncle McIntosh!" Rainbow Leaf replied and flew next to the old stallion.

"Help me sit down," he asked.

"Have we arrived, uncle? Here it is?" Rainbow asked, looking around the forest.

"Of course it´s not. Did you see any course of water around? He just needs to rest. Again," Cinnamon complained.

Big Mac lifted a huge hoof and gently ruffled the unicorn mane. "Sorry. Old folks like me need to rest a lot." Cinnamon huffed,slightlyy blushing. "Why don´t you little ones go get some branches?"

Rainbow did a salute and rushed into the woods while Cinnamon simply levitated a few rocks to make the campfire.

Once the fire was ready, Rainbow Leaf asked "Want to sing a song, uncle? Or what about a story? Uh, I learned a new joke in school! Want to hear it?"

"Please, not another mule in an island joke..."

"Oh come on, it´s funny!"

"I´m sure it´s not."

"Hehe."

"See, uncle is laughing! But I haven´t told the joke..."

"It´s not that. You two with your bickering remind me of your grandmother and her friends," Big Mac said.

"Grandma Apple Bloom? She is the best!" Rainbow chimed.

"She is just another boring old farmer. How could she resemble us?" Cinnamon snarked.

"She wasn´t always like that. She used to be as energetic as Rainbow here and could be as sarcastic as you, Cinnamon. But that all changed after what happened to your great-aunt."

"Auntie...Applejack?" Rainbow asked and this perked Cinnamon´s attention.

Big Mac scratched his beard, like he did every time he was nervous "Your auntie used to be the most dependable of ponies. And your grandmother drove her crazy everyday as she searched for her Cutie Mark. She was too eager to get one," the two fillies looked at their blanks where a rainbow colored leaf and half of an apple rested. "She had this little group and they did the craziest things trying to get their marks. One day they heard the story of a stallion that tried to course the Neighara Falls in a barrel. They thought they could do the same and the barrel broke halfways. Rainbow Dash, you remember her, girls? She saved your grandma friends but she got stuck in a branch. Your great-aunt jumped to save her and they both fell from the waterfall..."

"Did she died?" Cinnamon asked while Rainbow covered her mouth.

"No, she didn´t die then. But she broke both her rear legs. She was never able to work in the farm. I was still young back then and could handle all the work but Applejack..." Big Mac seemed about to cry. "Some say she died of sadness of losing her special talent but I´m not so sure. She was happy and proud of how her sister became one of the most reliable and noble ponies in Ponyville. I think she died happy."

"What a sad story," Rainbow said, wiping a tear.

"What a stupid story. What´s the moral here? That bad things happen to good ponies? Grandma Apple Bloom made a stupid thing and her sister pay the price," Cinnamon complained, her eyes red with frustration.

Big Mac ruffled her mane again. "I´m sorry, little one. Not all stories have a point. We better go to sleep."

****

The next morning they finally reached their destination. Even a cynical Manehatten citizen like Cinnamon found the sight of the waterfalls breathtaking. Rainbow start flying around, excited.

"What do you think, little one?" Big Mac asked.

"It´s beautiful...but why, do you take us here, uncle?"

Big Mac smiled and ruffled her mane one last time. "Just for you to enjoy your weekend in the farm. I know Ponyville can be pretty boring sometimes."

"Cinnamon, look look!"

Cinnamon rushed to meet her cousin. She was pointing at a statue that rested next to a viewpoint. A statue dedicated to the most dependable of ponies, bearer of an Element, and local hero. But more importantly, their own blood.

Big Mac looked at the little fillies admired his sister statue and smiled.

(playing a little with the prompt, just this close to make a Gravity Falls parody XD )