On the way up to the cave, Bruce stopped every once in a while and made arrows on various exposed stones with the chalk he had borrowed.  In the cave itself, he walked along a wall, dragging the chalk along it to leave an obvious line.  

[color=f26522]"Oh, I'm not sure I like this one, maybe we should-"[/color]

Bruce began to object, something to the effect that this whole thing was her idea, but the cave itself seemed to react to her, and soon they were all falling over each other, and sliding down into a watery cavern.  

It was natural enough that they would all follow the light, and luckily it led them out of the water.  Bruce, being the tallest, found his feet first, and reached to pull someone else(he wasn't sure who) toward the beach.  

[color=0072bc]"Well, it ain't like you coulda predicted a god dang earthquake. I'm not sure my chalk is gonna find us a way out of here..."[/color]

He looked across the strange underground beach. Something was casting light, and he could only imagine it was a way back toward the sun. What else would even be down here? 

[color=0072bc]"On the bright side, Doctor O knows where we went.  If we can't find our own way out, someone'll come lookin'. But look there,"[/color] he pointed across the cavern, [color=0072bc]"That's gotta be daylight, right? Let's get on up there."[/color] Bruce started trudging up the beach, his boots squelching horribly around sodden socks.