Really interesting. So many sacred sites have cow-related folklore (a 'blameless white cow' who gave milk to all at the stones, or Silbury being built as a pot of milk was boiled).
Loads of these specifically refer to white cows, too. There are still 40 or so descendants of the original white cattle that roamed these islands, kept on a massive estate in Northumbria. They're so beautiful that they're my desktop photo.
