Peat Oil with Formic Acid
Moors form when water stagnates in a landscape. They conserve plant remains and organic matter in such a way that the ground becomes increasingly acidic and inaccessible to air. The moor substance forms a heat-insulating layer. With appropriate pharmaceutical processing this substance can be released and made into a remedy which in combination with horsetail and horse chestnut creates a protective sheath around the human being.
"In the warm air of the season of the midsummer solstice (St. John's Eve), ants exude formic acid, thereby helping plants to organize themselves into shapely forms." (Source: a description on Wandil's homepage.)