I know in Holland, there is a natural ground plant that preserves the body because it kills the bacterias. It's the acid that the plant produces.
some people just fell in the bogs ,others were sacrificed and left in the bogs.
They are preserved by unusual conditions under the peat. These conditions include highly acidic water, cold temperature, and a lack of oxygen, combining to preserve but severely tan their skin.
original preservation.
they wore moldy clothes that were found with them in the bog