I’m always posting other people’s animated gifs on here. However, on our recent Vietnam vacation my wife took a series of photos I thought I could turn into one. As such, here is an animated gif of me entering and exiting a tunnel at Củ Chi through what one of the original hidden entrances would have looked like:
I just thought this worked. Yes, it was a little claustrophobic. The tunnel this connected to would have just been barely wide enough for me to crawl through. This entrance port was wide enough for me to drop down into, but I had to hold the cover above my head until I lowered my arms inside past my elbows before I could start to bend my arms and lower the cover.