Best lakes around Sydenham offer diverse natural landscapes and recreational opportunities. The area is characterized by its significant bodies of water, including Sydenham Lake, known for its size and depth. This region provides accessible natural spaces for various outdoor activities. Visitors can explore a mix of natural and man-made features, contributing to a varied experience.
Last updated: July 12, 2026
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This is one of the quarries here, a part of the former Chinnor Chalk Pit, now flooded and known as Old Kiln Lakes. The lakes are freshwater, but very alkaline, and there was a warning to the public issued in 2012 to not swim in there. It's a striking and moon-like place, looking very dramatic and slightly out-of-this-world. A definite must!
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This quarry is a Site of Special Scientific Interest and well known by geologists for its phenomenal history. Packed with fossils, some of the finds here date back 100 million years. There's no public access, but you can catch glimpses of its bright high-alkaline water from the surrounding footpaths.
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Chinnor Works Angling Society has been running for over 25 years, we use to have the fishing at the Cement Works.
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Chinnor, Chalk and Cement Mr. W. Benton's Cement and Lime Works opened in Chinnor in 1908, but cement making on a truly industrial scale did not begin until 1919. Output of cement from Chinnor peaked at about 5600 tonnes per week in the 1990s. Up to 120 people were employed at any one time. The cement works closed in 1999 and there are plans for the re-development of the site, using the flat areas for housing but also with opportunities for recreation and conservation in the water filled quarries The scale of chalk extraction for cement making can be seen from a short walk along the Ridgeway National Trail. The Ridgeway runs on a high causeway between the large quarries, giving views of the pits through the boundary fences. (Do not cross over or through the fences). Geology One of the chalk quarries has been protected as a geological Site of Special Scientific Interest as it has particularly good exposures of both the Lower Chalk and Middle Chalk geological layers. Both layers have given upimportant fossil ammonites.
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The Lyde, a tributary of the River Thames, rises here and the garden is planted with primulas, astilbes, gunnera and hostas. Originally three watercress beds, surrounded by large and beautiful wych elms, it has — as a result of elm disease — become a wilderness. The garden is open at the owners’ discretion from 9am – 4pm daily. Dogs are not permitted. See: carington.co.uk/gardens/lyde-garden
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Archaeological Surveys undertaken in Park Wood have revealed a fascinating past for this quiet area of deciduous woodland. Lynchets and banks within the woods give evidence of ancient field systems which may date back to the late Iron Age/early Roman period (or they may be medieval). In the beech woodland opposite the pond is evidence of a late thirteenth/early fourteenth homestead in the woodlands and in Tudor times (1485 – 1603) the woodland was a deer park. Much of Park Wood was converted to beech woodland from the late 18th until the early 20th century to cater for the High Wycombe furniture industry. Associated features include sawpits, tracks and charcoal burning platforms. https://www.nationaltrust.org.uk/chilterns-countryside/trails/bradenham-beech-woods-and-bunkers-trail
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The most popular lakes in the area include Pond in Park Wood, a serene lake nestled within a deciduous woodland, and Old Kiln Lakes Wetland Habitat, a former quarry known for its geological significance. Visitors also appreciate The Lyde Garden, a beautiful garden area where a tributary of the River Thames rises.
Yes, Pond in Park Wood is particularly rich in history. Archaeological surveys have uncovered evidence of ancient field systems, possibly dating back to the late Iron Age or early Roman period, and even a late thirteenth/early fourteenth-century homestead within the woodland. The area was also a deer park in Tudor times.
The area boasts diverse natural features. Old Kiln Lakes Wetland Habitat, a former quarry, is a Site of Special Scientific Interest due to its geological history and fossil finds dating back 100 million years. The Lyde Garden is notable as the source of The Lyde, a tributary of the River Thames, and features unique plantings like primulas, astilbes, and gunnera.
Yes, both Pond in Park Wood and The Lyde Garden are considered family-friendly. Pond in Park Wood offers a natural woodland setting for exploration, while The Lyde Garden provides a peaceful and beautiful environment to enjoy. Please note that dogs are not permitted in The Lyde Garden.
Beyond enjoying the lakes themselves, the Sydenham area offers various outdoor activities. You can find numerous running trails, road cycling routes, and mountain biking trails. For running, explore options like the 'Artistic Wooden Shelter – St Catherine's Church loop' or 'St Mary's Church, Thame – Moreton War Memorial loop'. Cyclists can enjoy routes such as 'Aston Hill Climb – Ewelme Village loop'. Mountain bikers have trails like 'The Phoenix Trail' and 'Descent to the Ridgeway Trail'. You can find more details on these activities in the Running Trails around Sydenham, Road Cycling Routes around Sydenham, and MTB Trails around Sydenham guides.
Yes, for Old Kiln Lakes Wetland Habitat (and its associated Old Kiln Lakes (Former Chinnor Chalk Pit)), there is no public access to the quarry itself, though you can catch glimpses from surrounding footpaths. The water in these former chalk pits is freshwater but very alkaline, and public warnings have been issued against swimming due to safety concerns. For The Lyde Garden, dogs are not permitted.
The Lyde Garden is open at the owners’ discretion from 9am – 4pm daily. It is particularly beautiful when its primulas, astilbes, gunnera, and hostas are in bloom, offering a vibrant display of flora.
Absolutely. The Old Kiln Lakes Wetland Habitat, a former chalk quarry, is a geological Site of Special Scientific Interest. It features excellent exposures of Lower and Middle Chalk geological layers, which have yielded important fossil ammonites. Some finds here date back 100 million years.
While specific viewpoints are not detailed for all lakes, the former Chinnor Chalk Pit area, which includes Old Kiln Lakes, is described as a 'striking and moon-like place, looking very dramatic and slightly out-of-this-world.' The Ridgeway National Trail runs on a high causeway nearby, offering views of the pits through boundary fences.
Pond in Park Wood has a fascinating past. Archaeological surveys have revealed ancient field systems, potentially from the late Iron Age or early Roman period, and evidence of a late thirteenth/early fourteenth-century homestead. During Tudor times (1485–1603), it served as a deer park. Much of the woodland was later converted to beech from the late 18th to early 20th century to support the High Wycombe furniture industry, with associated features like sawpits and charcoal burning platforms still visible.
Wild swimming is generally not recommended in the lakes around Sydenham. Specifically, the water in Old Kiln Lakes (former Chinnor Chalk Pit) is very alkaline, and public warnings have been issued against swimming there due to safety concerns.


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