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Perilous Jack emerges from the Red Pipe into a narrow, stiflingly hot corridor.

The walls are of ash-gray brick, and the ceiling is low. Ahead of him is a gap in the ceiling, granting access to a stairway leading up into darkness. Beyond that, the floor drops into another stairway leading down. The way up is silent; from the corridor ahead emerges flickering light, the noise of machinery and activity.

If you think Perilous Jack should take the upper stair, turn to 131.

If you think he should move forward and follow the downward path toward the noise, turn to 108.