Pinkie and Maud Pie were condemned to live in interesting times. In the last few years, Equestria had experienced the return of Nightmare Moon (which Pinkie would witness firsthoof), an ensuing civil war, fundamental societal restructuring, and wars against the Changeling Lands, the vicious King Sombra, and various states to Equestria's north. Heck, their sisters Marble and Limestone had even been conscripted to fight in some of those wars! In times like these, staying close to one's family was more important than ever, and Pinkie and Maud were more than happy to share more time together. Their family farm wasn't far from a peak which the two often liked to hike up, far from any semblance of civilisation. It was a familiar trail that they had traversed since they were teenagers, but it wouldn't take the pair long to notice something unfamiliar about their old trail.

"Hey Maud," Pinkie began, "What do you think that is? I've never seen this before!"
"A secret government black site," Maud said.
"You silly!" Pinkie laughed, "The sign says it's not a secret government black site! Why would the sign lie?"

(it was a secret government black site)

"alt source":https://www.newgrounds.com/art/view/moonatik/hike