Strong wind and strong thermals create a dangerous mix when flying low. You can see a large frontal collapse here.
Luckily my reaction was adequate, letting the brakes up initially, then checking the surge. As I did not have much height, correct input was crucial.
Stalling the wing just after the collapse, or not checking the surge after it could have resulted in a lot less favourable outcome. Many thanks to my SIV trainer, as after experiencing this collapse in a controlled environment I could execute the necessary input without panicking.
Longer video of the flight at "Rough day at Devil`s Dyke, low level frontal collapse"
