True of Cornish accents as well. I remember when I was a teenager and waitressing at my home town's HoJo's. A few English people had come over to do a foreign exchange thing, maybe through UNH, and one of them was from Cornwall. I swear, I could not understand a single word he said. Fortunately, he had a girlfriend who "translated" for me and they all had a good laugh about it all, thankfully.