The highlight of the trip was definitely walking inside the tunnels. I can’t imagine being in a situation where living under these conditions is your everyday life, just trying to stay alive. The space is tiny, you’re surrounded by plain darkness and walls made of earth.
We started out at some tunnels that were a decent size. These were not originally at this size, but they were made bigger when they opened it as a tourist attraction. The last tunnel we visited was so narrow and small that it made me a little claustrophobic even though I’m usually not. I’m tall so when I walked in that last tunnel, my heels touched my butt on every step. We had a short Vietnamese guy walking in front of us the whole time and he ran like it was no big deal.