Macrofossils tell us which plants were living on the bog surface or were blown in from the surrounding habitats at the time the peat accumulated and if the bog experienced any outbreaks of fire.
Macroffosilau sy’n dweud wrthym ba blanhigion oedd yn byw ar wyneb y gors wrth i’r mawn gronni ac a fu’r gors yn destun unrhyw achosion o dân.