A tent fire which reduced a v large tent and EVERYTHING inside to ash in under 3 minutes.
The speed of it was the most terrifying thing ever.
Caused by a silly mistake - one of our group changed the canister on a gas lamp while the mantle was still hot so it ignited and shot out a 2 foot flame. The guy then dropped it and it rolled towards the tent - and whooosh. Horrible.Thankkfully noone was inside and apart from nasty burns on the guy's hand all are ok.
So we now have extra rules. No gas anywhere near tents (he was outside but clearly not far enough); no children inside sleeping compartments and especially not zipped up.
Oh yeah, and check insurance covers you before you go. This couple lost everything and their insurance won't cough because they weren't in a building. Two and a half grand's worth of kit and clothes, teddies, toothbrushes...