Capturing this shot was one of the most fascinating experiences of my life. First, my wife and I had to use lights to find the way through water filled tunnels teeming with eels. Followed by setting up the camera and tripod in the water and mud. Then we closed our eyes to adjust to the darkness - and re-opened them to millions of blue glowworms shining like stars in a night sky. An utterly otherworldly experience - lucky to have seen it in a couple of travel publications.