Yesterday, Brinkley and Travel Girl headed underground to do some spelunking in the worlds largest explored cave system - Mammoth Cave. Don’t worry, with 400 miles of explored cave, they stayed close to their tour guide. Even with Brinkley’s good nose it would be easy to get lost in there. They would have liked to explore for longer, but they have more things to see. So they hopped back on the road to make it to stop number four. They sent us this picture today:
Can you tell where they are? They are getting closer and closer to their final destination!