John,
you'll find like minded people in the Society of ley hunters.
If you can stomach a skeptical view go to the Skeptic's Refuge and you'll find an article with links under 'L' in the Skeptic's Dictionary.
If you find by dowsing what you are looking for consistently you should try it under controlled conditions and collect the one million dollar price from James Randi.

A folk song about ley lines (from the singing of the Watersons):

I like to rise when the sun she rises
Early in the morning
I like to hear them small birds singing
Merrily upon the ley lines.
(but my recollection of the lyrics might be faulty , grin).

Wolfgang