The Cave Epilogue

Three kids were sitting on a small mossy log just outside the Cave of Elucidation. The cave was in a clearing in the middle of a forest, a forest that bordered their village, two and a half miles back. One kid looked up at the azure sky framed by the green leaves on the branches of the surrounding trees, and said something that would start a chain of events that would forever change the world.
“Hey, guys. I have an Idea. Let’s go inside the cave.”
The other two kids skeptically looked at the girl on the middle of the log, sitting between them, and they both became very still. Before she spoke up, the two little boys were wiggling on the log, kicking their legs, wiggling as kids do, but the moment she spoke those words, they fell completely

“Yeah,” the boy to her right chimed in.
“Well, if you guys are too afraid to go, then I’ll go alone,” the girl announced with vim and vigor.
Much to the boys’ dismay, she hopped off the log, and marched over to the cave behind them. Her little blonde curls shivered in the wind that seemed to grow ever stronger as she drew closer to the forbidden cave.
“Wait for us,” the boys shouted in a panic as they frantically ran toward the cave, recklessly drawing near the thing that their parents told them not to go near.
The girl waited at the mouth of the cave for the two boys to catch up to her. Then, the three of them entered the cave, with the girl at the lead and the boys following her while putting up a false face of bravado.
The cave itself was, at first, just an ordinary rocky cave, the soil colored rocks that made up the mouth, and some of the interior were ordinary enough. The problem that the kids faced was that, at a glance, there wasn’t any light to be found in the cave, but as the girl drew deeper into darkness, the walls of the cave began to glow. With the cave illuminated, the girl led the two boys further into the depths of the cave, which seemed to narrow to a space about three feet