I went on a caving trip this weekend with a large group and one of the trip leaders broke a cave formation off the ceiling with their helmet.

It was a smallish drapery like formation, and he/she lamented the loss for a brief moment- and then moved on... I am sure that he/she was quite ashamed and embarrassed and didn't want the rest of the group to notice. I was very saddened by all of this, and hate to think that our trip to this cave caused harm.
This person is planning on leading more trips, and this upsets me. What can I do to inspire my fellow cavers to be a bit more thoughtful? Any ideas??
