Answer:
1) The interior story starts with the sentence "It was spring, a clear evening, when I thought it might be my last evening." This sentence marks the beginning of the storyteller's narrative and the shift from the group of hikers sitting around the campfire to the story being told.
2) One description of the storyteller that you might not know in a different text structure is that they are a quiet man. This detail is only mentioned in the passage because it is part of the narrative of the story being told around the campfire.