Break off a large crystal. (Combat)

Drawing your blade and planting your feet on the steady stone floor, you swing hard and fast over your head.

CLANG

Your sword collides with the crystal with a loud clang, which echoes around the high roof of the cavern. You lean forward and see that the base of the crystal, where you struck, has a sizeable crack. You get into position and strike again.

CLANG

The crack widens. A thin spiderweb of faults begins to spread outwards, creating miniature pressure lines and cracks along the other crystals.

CLANG

With one final arc, your sword hews the crystal clean off the wall. You grab it, appraising the hunk of valuable mineral; a bright glow emanates from inside the pink crystal, seeming to dim and brighten every few seconds. You slip it into your pack. This will fetch a fortune.

CRACK

A loud snapping sound, louder than the rumble of the waterfall, causes you to jump. You whirl around to the spot where your removed the crystal: a giant fissure has formed in the wall, spreading upwards.

“Shit...” You mutter to yourself. As you watch, a seam forms at the base of a crystal growth, causing the base to break away from the wall. You scramble to your feet and jump backwards, narrowly avoiding the cascade of sharp mineral shards.

CRACK

Above, the vaulted, glittering ceiling begins to shake, raining down a shower of crystal bits. The crack is spreading upwards, widening at an alarming rate. It’s time to go. Slinging your pack onto your shoulder, you break out into a run as shards rain down around you. Some shatter as they collide with the ground, sending up a burst of shrapnel which stings your skin.

You sprint past the lake as a ginormous hunk of crystal crashes into the surface, drenching you with water. Blinking the droplets out of your eyes, you drag yourself forwards.

Miraculously, you reach the mouth of the exit tunnel. Safe beneath the hewn-stone roof, you collapse to your knees, gasping for breath.

CRACK

With one final, thunderous snap, a giant outcrop of crystal slams down at the entrance to the tunnel, sealing it away.

You climb to your feet, still in shock, your wet clothes dripping onto the floor. Silently, you walk on, further into the tunnels and away from any destruction you just caused.