These were some of the entrances to the tunnels below. They had to widen them a little for tourists because the Vietnamese people were so small. Our tour guide said the biggest soldier would be no more than 50 kg. (110 lbs).

Once down below you had to stoop down or crawl on your hands and knees to get around. Of course, Vika didn't have to. Some of us couldn't go down because we were too claustrophobic and it isn't a comfortable way to get around.