Mick is a keen, and experienced potholer. (Yes, mental, I know, but he likes doing all kinds of hideous dangerous stuff like abseilling etc. and in fact now runs an outdoor adventure company. He has also worked with eejits like Bear Grylls (who he says is a K**b). Anyway, I digress. He was on a potholing trip, which involved independent sump diving. Basically, that means you have to swim through a tunnel which is COMPLETELY filled with water to get into another chamber. The team leader told him he would have to swim fast because he'd have to hold his breath for about 15 seconds.
Down he went, and started swimming. And then kept swimming, and still didn't reach the chamber. His chest was burning and he was starting to panic after having been swimming for about a minute* with his breath held in the complete darkness, when he finally came into the cavern. He was astounded. It was vast and cathedral like, with all kinds of interesting stalagmites and stalagtites. The description of the cavern had been nothing like this! So he started to work his way through the enormous cavern to find the rest of the team and to explore.
He started to get concerned when, having explored the cavern, he could not locate any of the others. So he turned back to try to go back through the sump, to find that the lower parts of the cavern were filling with water. There was no other exit, and by this time he realised there was no possiblity of going back down the sump. The cavern continued to fill. He climbed to the highest point and watched in horror as the murky waters rose and rose. They continued to rise until he was almost completely submerged (he had his face pointing upwards and the water reached his chin before they started to subside. He thought he was going to die.
He was eventually rescued by the cave rescue people about 2 hours later. It transpired that he had swum down too far and had found a sump that nobody knew existed. He was the first person to find the cavern. And a VERY lucky man.
The really odd thing is, he still goes potholing!!!!!!!
Just hearing this story made me feel sick to the pit of my stomach. So I thought I'd share it with you too!!
*Yes he is scarily fit, unlike his friend!! (Me)
so how do i get to be his friend and get free invites just to make numbers up 
) I don't like sailing boats either, especially when they lean over. I don't get sick, just scared.
I've been known to feel travel sick on trains too, which I think is probably quite rare.
