Author's Note: I really should be working on my essay right now, but I finally hit some inspiration to finish this. I already have an idea for the next one so hopefully I'll be done as soon as I finish that stinking essay!

Cave

"Caves are one of the last unexplored frontiers on Earth." –Carshner Caverns Pamphlet

Danny Fenton was taking a well-deserved nap on a bench in the library. The bench wasn't terribly comfortable, and he wasn't terribly tired, so sleep was not coming easily, but with how little sleep he'd gotten in the past week, between ghost attacks, assignments, and time with his friends, he felt he at least had to try and catch up on his sleep schedule.

"Geology adventure!" An excited voice jarred him out of his near-sleep state. It was Erika, that OC who always seems to show up in these challenges.

"Wha…?" Danny opened his eyes to see the blonde teen standing over him.

"I'm going spelunking in Nevada, it'll be tons of fun; you should come!" Erika explained.

"Uh, thanks Erika, but I don't know if I can just leave for Nevada right now." The dark-haired teen said.

Erika smiled and pulled out her time-travel-device. "No worries, with this thing we'll get there in a matter of seconds." Danny hesitated. "Like you've got anything better to do right now." She egged him on.

"Well, alright." He finally agreed.

"Sweet!" the girl cheered softly (The were in a library, after all) "Go home and grab a headlamp, then meet me outside Timmy's house!"

Ten minutes later, Danny was outside the Turner's house, along with Spongebob, Jimmy, and Jenny. Erika burst out of the house, closely followed by Timmy, who was in turn closely followed by Vicky. The evil babysitter was noticeably more enraged than usual.

"I'll-bring-him-back-in-one-piece-soon-I-promise-t hanks-see-ya!" Erika shouted over her shoulder.

"Ok-let's-go." She quickly opened a portal and flung her bag of equipment into it, along with Timmy. Next she dove in. The three remaining friends followed suit when they saw Vicky was wielding a flame-thrower.

"What was that all about?" Jimmy asked when they emerged on the other end of the portal.

"I told you we should have just snuck out." Timmy glared at the blonde girl.

"What?" Erika retorted, "If you just left with me without telling anyone, that'd be like, kidnapping! I don't wanna be accused of kidnapping!"

The bucktoothed boy rolled his eyes but dropped the subject.

"So… are we going on a cave tour?" Spongebob asked.

"Tour? Pch, no!" the blonde girl scoffed. "Tours always leave out at least one really big or really cool room for one reason or another. 'It's flooded, the bats are hibernating in there, the roof is unstable'. I'm taking us to a cave some guy on the internet found."

"So what you're saying is that you have no idea if this cave is even really there, much less if it's safe or worth exploring." Jenny summed up.

"Weeeeeell, that's why I brought you guys!" Erika grinned. "And of course it's worth exploring, it's a cave! And I know it's really there, because it's right here!" She pointed up the limestone ridge to a shadowy overhang that did indeed look like a small cave entrance.

"Ok, this I'm borrowing this from the Geology Department, so don't break it." Erika handed out harnesses to be clipped to a tow line "This is so we don't get separated, and so if somebody falls we can all pull then back up.

"Is there much chance of that happening?" Spongebob asked nervously.

"I dunno, I've never been here before."

And so they entered the cave. The entrance was small, Danny and Jenny had to get down on their hands and knees to get in, but it opened up after a couple of feet into a much larger cavern. Erika shone her headlamp up at the ceiling where several stalactites were dripping.

"This cave is pretty wet." Jenny pointed out.

"Cool, huh?" Erika replied. Jenny gave her a withered stare. "Oh crap, you need water proofing, don't you? Uh, no worries, I got a poncho in here somewhere…" She began digging around in her backpack. Out came a large red poncho.

So they continued on, marveling at the otherworldly flowstone formations, ranging from creamy white to dirty yellow in color. Eventually, they came across a narrow ledge, with water running down the wall, over the ledge, and into a large hole. The tunnel they were following seemed to continue on the other side of the small stream.

"I guess we should turn around and look for another passage." Spongebob said.

"Nah, we can make that… probably." Erika insisted, "I'll go ahead first and test it out. And if it's not stable, Danny and Jenny can fly us over!"

"Uh, I'd rather not." Danny said.

"Yeah, there's not a lot of room in here." Jenny agreed.

"Oh, well… I'm still sure it's fine." And with that Erika walked out onto the ledge. It was about six inches (fifteen centimeters) wide, and she could easily sidle along it with her back to the wall. Unfortunately, it was also rather slick with water. About half-way across she lost her footing and fell. Everyone tensed as the rope tightened under her weight, but the line did its job and kept her from falling. It did not, however, keep her from slamming against the wall of the hole.

Suddenly there was a bright flash of blue light and everyone felt the ground disappear beneath them. It returned just as fast but when the light died away, but their surroundings had drastically changed. Instead of the fantastic flowstone forms, they were surrounded by drab brown walls that appeared to be carved out, or at least modified, by tools. Round boulders about the size of basketballs littered the ground.

"What the heck just happened?" Timmy asked.

"I'd guess some sort of temporal shift." Jimmy said as he picked himself up off the ground. "Perhaps where Erika fell the impact set off her Time Travel Device."

"That sounds like a serious design flaw," Jenny said, "If only a fall will set it off."

"Hey, where exactly is Erika?" Spongebob asked. The five remaining friends spread out across the tunnel, calling her name.

Erika was just a few meters down the tunnel, still quite dazed from her fall. Hearing her name snapped her out of it, and she blinked her eyes open.

Surprisingly, there was another set of eyes staring right back at her. Eyes belonging to… a rock?

"Whoa!" She scooted back in surprise.

"Geodude!" The rock shouted in surprise right back.

"No way…" Erika whispered to herself before calling out to her friends. "I'm over here guys, and I think I have an idea of where we are."

Author's Note: Well, now you just have to figure out WHICH of the many caves in the Poke'mon world you're in. At least we can rule out Unova.