Gassed

"What do we do now, Gerald?" Harold asked, glancing at Alphonso for a second before shifting his focus back to Gerald. "Alphonso can't move. I'm not a doctor, but I'm pretty sure that he needs medical treatment."

"What to do indeed," Gerald placed his hand under his chin and thought to himself. The sewer openings were now not accessible, and the only remaining way out is…

"That." Gerald said as he pointed at the collapsed roof, and everyone's attention turned to there. 

"Well, isn't that great.." Harold said in a sarcastic tone, but he also felt frustrated because he couldn't think of any other method to escape.

The collapsed roof, although still covered in boulders, provided a small opening to the outside world. 

"Isn't it too high for any of us to reach?" Harold asked, concern evident in his voice.