things that go bump in the night

You ask the guide to go first and he doesn't budge. For a long while there is silence, then he is behind you. He pushes you forward, onto the bridge and blocking your way out. The bridge swings and creaks awfully. He pushes you across, scruffing you and dragging you if he must before he deposits you on the other side of the bridge and walks into the cave, not waiting for you to follow.

In the struggle, you scrape your throat. It bleeds a little, but will heal just fine.

Inside the cave, warm lava lights the way. Small pools bubble and small streams flow from tiny cracks in the walls. Several boulders act as stepping stones across larger gaps, and small wooden bridges span other areas. Around the walls of the room, a thin edge navigates above any threat of lava. It is clear you need to get to the end of this room if you wish to continue your journey.

What do you do?