Heather moors are dry moors made up of a low heather thicket (ash, ciliate, callune), with brooms, thorny gorse, juniper and blueberries. This type of heath developed with Neolithic clearings, followed by pastoralism. Until the beginning of the 20th century, 95% of the Monédières massif was covered with heather, ferns and junipers (compared to 20% today).