She went on a picnic with her boyfriend and came back with her fiancé!

Holly Williams' beau, fellow musician Chris Coleman, blindfolded her last week and took her for a romantic lunch in Liepers Fork, Tenn., complete with wine, cheese and a little scavenger hunt. The two went on a hike looking for Civil War relics, but Chris had arranged for Holly to find something more romantic.

"I dug up a beautiful wooden box with my favorite love quote on it and the engagement date carved in roman numerals. He wood-burned the letters onto the box!" Holly tells PEOPLE. "He got on one knee and I opened the box, underneath the flowers and basil were the rings."

Holly's left hand now sports an antique, three-banded diamond engagement ring from 1923. She has not yet set a wedding date.