The local cave wardens would string up anyone using a flash. They supposedly do a lot of damage.
I have a hard time believing that. From what exactly, a few microseconds of photons? Open a cave to the noonday sun for a week and it will change things, but a flash doesn't make sense. And if so, then how is a headlamp supposed to be OK?
There are low level lights though, so my 5D MK II/ 35mmL worked just fine.
I probably would have done better if I could have stopped. I was with a group that was marching forward.
Gardner cave in NE Washington State up near the Canadian Border. Sorry for the poor photoshop job, I removed some obstructions from the image, and its a poor job.
Nice, I'll have to visit it next time I'm up there.
You are right, its my poor memory. They prohibit you from touching the delicate formations, not from using flash
If you are ever up here, drop a e-mail and we might be able to meet.
Here is some damage, I thought the guide said it was from bright lights letting the alge grow.
Setting up a tripod - just too many people in a group, and not enough room on any flat places. Mistly, the descent is on narrow and steep stairs cut into the rock, or steel stairs. A monopod should work though.
The 35mm L and 5D Mark II worked very well, but in some places, a flash would have been needed. I restricted my photos to areas close to a light.
A small side vent that probably goes to the surface somewhere in the trees and rocks above. The cave has been pretty well explored and documented over the years, but I only have my recollection of what the guide said.