>>15848867http://www.youtube.com/watch?v=AZeAhgpGk7U"I hate to interrupt, but I believe we're here."
Miss carries your attention away from the Hard Stone and towards a big cavern you've just stumbled into, seems like this is where the tunnel's been leading this entire time. This cavern in particular looks to be a part of an abandoned mining campsite, it's littered with rusty train tracks and unmovable mine carts.
Doug twitches, "OOOOOH, I have it, I'm having that feeling again, the core, the core is here! Only the best of the best gems are stashed down here! I'm gonna get 'em all!"
Miss stops the mole just as he begins to dislodge a ruby from the wall, "Not so fast, it seems like we were beaten to the punch. We're not the only group looking for stones down here."
She's right, grunts from Team Flare are everywhere, they're basically tearing the whole cave apart for the sake of their own objectives. According to your ethical morals, disturbing the environment is NO GOOD.
A) Talk to Marty the No-Balls Grunt
B) You should make use of that stone. Throw it at a grunt for fun!
C) Search around and sneak for Chrysolite under their noses!