Jackpot! This was the motherlode. Cricklade has 80% of Britain's snakehead fritillaries, in 40 acres of wet fields. Snakehead fritillaries love wet soil and the purple ones are more abundant. Every year in April a purple haze covers over North meadow in Cricklade. Cricklade is a little village with one main street and no traffic lights. I took the train from London to Swindon, then a bus from Swindon to Cricklade. It was a 15-20 minute walk from downtown Cricklade to North meadow and there they were. What a spectacle. I was in Oxford yesterday and there were some there but the area was closed off. Here at Cricklade I could walk among them and it was so wonderful.