A heap of stones in a field should not be disturbed, though needed for building, especially if they are part of an ancient tumulus. The fairies are said to live inside the pile, and to move the stones would be most unfortunate. If a house happens to be built on a fairy preserve, or in a fairy track, the occupants will have no luck. Everything will go wrong. Their animals will die, their children fall sick, and no end of trouble will come on them. When the house happens to have been built in a fairy track, the doors on the front and back, or the windows if they are in the line of the track, cannot be kept closed at night, for the fairies must march through. Near Ballinrobe there is an old fort which is still the preserve of the fairies, and the land round it. The soil is very fine, and yet no one would dare to till it. Some time ago in laying out a new road the engineers determined to run it through the fort, but the people rose almost in rebellion, and the course had to be changed. The farmers wouldn’t cut down a tree or bush growing on the hill or preserve for anything.’ (Evans-Wentz, 1911, 38)