Cartwheeled a glider during an off-airport landing in '95
One day competition and just rounded the furthest check point about 100 miles from home.
Got too agressive, got too low and picked the largest field I could find and intended to land diagonally for the longest landing distance.
Never saw a 10 feet deep ditch that ran halfway, but that's ok I didn't hit that one.
The field had an upslope(or downslope) and the left wing clipped the three foot high grass on the low side.
Flying cartwheel was the result.
No damage done was the conclusion after a very thorough inspection by club tech's.
As I walked uphill to the farmer's house I nearly tripped and fell into the 10 foot ditch.
That would have surely killed me, it wasn't visible form the road and I would have croaked there in a couple of days.
I'm passed 10K hrs now.......knock on wood fingers crossed....