We wondered if you went though the slot or not. Sounds like you spent more time underground then us. Our trip was a bust. The first was full of dead sheep, the second we could not find (it had no grid ref) and the third cave only I fit though, though I pushed it to the near end. So really we spent most of the day wandering around in the sun, hence no trip report.
We should do more trips where we end up having to sit outside in the warm sunshine because no one can fit through the entrance constriction (except you, of course).
The sunburn must just be on your face then, considering we were wearing oversuits the entire day! I really think we should have just gone on a nice, long proper walk instead of ‘caving’. It was such a nice day.