However, based on the title alone, some potential themes that might be explored include:
* Nature vs. Civilization: The bear could represent the wild, untamed forces of nature, while the travelers symbolize humanity and its attempts to navigate the world.
* Survival: The story could be about the travelers' struggle to survive an encounter with the bear, highlighting their resourcefulness and courage.
* Fear and Courage: The presence of a bear often evokes fear, but the travelers might display courage and resilience in the face of danger.
* Friendship and Trust: The relationship between the two travelers could be tested by their encounter with the bear, revealing the strength of their bond.
* The Unexpected: The appearance of a bear can be an unpredictable event, leading the travelers on a journey they didn't expect, possibly changing their perspectives or understanding of the world.
Ultimately, the true theme of the story will depend on the specific events, characters, and symbolism employed by the author.