I confess I'm a wimp and I'm just a tiny bit scared of heights. (I did master going to the top of the mast on my sailboats. :) But, NO way would I ever climb up a steep rock ledge and jump through an opening barely wider than the width of my arms spread open....Especially when that opening is jagged rock! But a few French Canadian teenagers were brave enough. They climbed tot the top lickity split and jumped right on through and then rushed back up to do it again. The braveness of youth!!! I was inside of Thunderball and used the underwater camera, which also does video, to video their jump. For a low megapixel camera, I thought it did a nice job. Check it out!