Kielder Forest and reservoir, looking north-east from Yarrow
Kielder Forest shown within Northumberland
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Kielder Forest is a large forestry plantation in Northumberland, England, surrounding Kielder village and the Kielder Water reservoir. It is the largest man-made woodland in England. Its 250 square miles (650 km2) are three-quarters covered by forest. The majority of the forest lies within The Border Forest Park with the southern tip, known as Wark Forest, lying within Northumberland National Park.
The forest is owned and managed by the United Kingdom Forestry Commission, which initiated the first plantings in the 1920s. During the 1930s, the Ministry of Labour supplied men from among the ranks of the unemployed. Many came from the mining communities and shipyards of North East England. They were housed in one of a number of instructional centres created by the Ministry, most of them on Forestry Commission property; by 1938, the Ministry had 38 Instructional Centres across Britain. The hutted camp in Kielder is now under Kielder Water. Numerous purpose-built villages were also constructed for workers' families, including Stonehaugh.
Prior to the 1920s, the land was predominantly open moorland, managed for grouse shooting and sheep grazing with remnants of native upland woodland existing along stream sides and in isolated craggy areas. The Forestry Commission, funded from the public purse, purchased land across the country with the brief of establishing a strategic reserve of timber for the nation. This single objective held sway until the 1960s. Since that time, management principles have changed in order to reflect rising awareness of environmental needs and to provide recreational facilities whilst seeking to maintain a sustainable supply of timber. Kielder today remains state-owned and its development from a single-objective plantation to a multi-purpose forest mirrors the development of plantation forestry across the United Kingdom.
The name 'Kielder Forest' is often also applied to the area of hills and remote moorland that surround the forestry plantations. The group of hills merges into the Cheviots to the north-east but is generally well-defined on other sides. It reaches a maximum height of 602 m at Peel Fell and also contains the Marilyns of Sighty Crag and Larriston Fells. These hills, despite not being very high, are particularly remote owing to the scarcity of settlement in the region. Indeed, Sighty Crag is the furthest hill in England from a road.
Kielder is dominated by conifers. Sitka Spruce (Picea sitchensis) covers 75% of the planted area; this species thrives in the damp conditions afforded by northern Britain. Other species include Norway Spruce (Picea abies) and Lodgepole Pine (Pinus contorta), which cover 9% of the area each. The remainder is made up of Scots Pine (Pinus sylvestris), larch (Larix spp.), Douglas-fir (Pseudotsuga menziesii), and broadleaves including birch (Betula spp.), Rowan (Sorbus aucuparia), cherry (Prunus spp.), oak (Quercus spp.), Beech (Fagus sylvatica), and willow (Salix spp.).
475,000 cubic metres of timber is harvested annually to supply local sawmilling, chipboard, pulp and wood fuel customers. Most of this volume comes from clearfelling areas; an increasing percentage however is sourced from stands harvested under continuous cover silviculture systems. Clear felled areas are replanted with a mix of coniferous and broadleaf tree species, opportunities are also taken to increase the proportion of open space and to improved the riparian habitat. As with all Forestry Commission woodlands timber is independently certified under the Forest Stewardship Council scheme.
The forest contains a number of sites of special scientific interest, primarily associated with the upland moorland environment. A programme of restoration of Border Mires is ongoing. The forest is one of the last English strongholds of the European red squirrel, and provides excellent habitat for many species of birds of prey. In 2009 a pair of osprey nested successfully in the forest. This pair have continued to nest there each year since, and a second pair nested in the forest in 2011. A large population of roe deer is actively managed. Many archaeological remains can be found within the forest and are an important cultural link to the often turbulent history of the area.
Kielder Castle Visitor Centre is an 18th-century hunting lodge built by the Duke of Northumberland, which has been converted into a visitor and information centre. It is located on the edge of Kielder Village at the head of the River North Tyne valley.
The Castle serves as a hub for the growing number of recreational facilities on offer, walking and cycling trails, picnic areas and a forest drive.
A great football match is reported to have taken place between the men of Tynedale and Redesdale at Kielder Castle in 1790 
In 2010, former British distance runner Steve Cram inaugurated the Kielder Marathon which is a circuit around the lake taking in the surrounding gentle contours.
In the same decade the local authority began a reduction of late night street lights to enhance the dark skies of the park and sponsored observation facilities and advertising to attract visitors to the darkest skies in the mainland of Britain.
- Kielder Water and Forest Park, Forestry Commission England
- "Kielder Ospreys". Retrieved 2012-04-02.
- http://findarticles.com/p/articles/mi_qn4158/is_20000918/ai_n14341450 Jay Merrick in the Independent on the Kielder Skyspace
- Dark Skies Project Visit Northumberland.com. Accessed 2015-04-14.
- Visit Kielder - Dark Skies Accessed 2015-04-14.
- Burlton, B. Jardine, D. O'Hara, J and Probert, C., "Kielder Forest Park, Guide Book" 1996, HMSO, London, ISBN 0-85538-273-2
- Field, J. "Learning Through Labour: Training, unemployment and the state, 1890-1920, 1992, University of Leeds, ISBN 0-900960-48-5
Media related to Kielder Forest at Wikimedia Commons
- Kielder Castle Forest Park Centre - official site at the Forestry Commission