The walls are built of local granite and the roof made of Scots pine. Subsequent plantings resulted in the survival of a single Scots pine. The process was chemical and made use of the leaves (needles) of Scots Pine. These trees were to be replaced with other species such as oak and Scots pine. Fire appears to increase the natural recruitment of Scots pine seedlings. After the end of regular grazing Scots Pine became the dominant species. It is now woodland dominated with Scots pine and native broadleaves. It was formed from a single Scots pine log. Some locations have been planted with trees and shrubs, including rhododendron, willow and Scots pine. Although much reduced, significant remnants of the native Scots pine woodlands can be found. Their natural range is usually covered by forests of Scots pine or maritime pine. Scots pine was dominant until 3,400 BC. Newfoundland pine marten, Methuselahs beard, lodgepole pine, and Scots pine. Scots pine is an important tree in forestry. They predominate fir tree, Pine, Abies grandis, Scots pine, Abies pinsapo and other.