Neither did I - that's very interesting - of course we live 'inside' the myth of technology (from where it can't be seen as myth) and so perhaps geomagnetism is just our word for the same experience?
The notion of Genus Locii is a beautiful one and you are spot on - an undefinable but often shared experience of the 'particularness' of a place - now whether that is geologically inspired or because , say, the place has been used for ritual for hundred's of years it's difficult to say. You have a very strong sense of that as a child don't you? - and then it often recurs later in dreams.
The experience of Genus Locii seems as relevant now as in pre-historic times - and more so than one's experience iof megalithic remains perhaps - because it is experienced and conditioned in this present. I'm definately not doubting it as a phenomenon just wondering what the criteria for places being recorded here was - but perhaps Four Winds has answered that.
