One door closes

With a fire going from debris that had joined Garand from above, the group settled.
Erik sat a short distance away, once more lost in thought. Dyvia was about to question his dour mood, but suddenly had to brace herself as a tremor shaked the ground.
Erik, once again shaken from his thoughts, felt the more minute rumblings of a cave in somewhere. A brisk rush of air came from where they had come from.
"Something has blocked our way back."