Best lakes around Longwick-Cum-Ilmer are found within a landscape characterized by its rural setting and proximity to the Chiltern Hills. While the parish itself contains private water bodies at Horsenden Manor, the wider area offers publicly accessible natural features. The terrain includes woodlands, former industrial sites now reclaimed by nature, and cultivated gardens, providing a diverse range of water environments. These areas offer opportunities for walking and observing natural habitats.
Last updated: June 29, 2026
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Popular around Longwick-Cum-Ilmer
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 area around Longwick-Cum-Ilmer features a diverse range of water bodies, including natural ponds within woodlands, wetland habitats on former industrial sites, and cultivated garden lakes. While Horsenden Manor within the parish has historical private water features like a serpentine pond and a lake with an island, these are not publicly accessible. Publicly, you can explore areas like Pond in Park Wood and the unique Old Kiln Lakes Wetland Habitat.
Yes, several spots are suitable for families. Pond in Park Wood is located within a deciduous woodland, offering a pleasant environment for walks. The Lyde Garden, where a tributary of the River Thames rises, is a peaceful garden that can be explored at the owners' discretion. Further afield, Watermead Lake near Aylesbury is also considered family-friendly, known for its waterbirds and a bandstand.
While some water bodies exist, wild swimming is generally not recommended. For example, the Old Kiln Lakes (Former Chinnor Chalk Pit) are freshwater but very alkaline, and a public warning was issued against swimming there. It's always best to check local regulations and safety advice before considering swimming in any natural water body.
The region's lakes often have interesting backgrounds. Old Kiln Lakes Wetland Habitat is a Site of Special Scientific Interest, renowned among geologists for its rich history and fossil finds dating back 100 million years. Pond in Park Wood is part of a woodland with archaeological evidence of ancient field systems and was historically a deer park.
Yes, there are several hiking opportunities in the vicinity. For easy walks, you can explore routes like the 'Longwick Village – St Peter's Church, Ilmer loop' or 'The Lyde Garden – Holy Trinity Church, Bledlow loop'. You can find more details and routes in the Easy hikes around Longwick-Cum-Ilmer guide.
Beyond hiking, the area offers options for mountain biking and road cycling. You can find various routes, such as the 'Lodge Hill Singletrack' for mountain biking or the 'National Byway: Bernwood Forest Loop' for road cycling. Explore these activities in the MTB Trails around Longwick-Cum-Ilmer guide and the Road Cycling Routes around Longwick-Cum-Ilmer guide.
The lakes and ponds at Horsenden Manor are on private land and are generally not open to the public for recreational purposes. They are part of a private estate, and visitor access is not permitted unless specifically advertised by the owners.
While many outdoor areas in the region are dog-friendly, specific rules apply to certain locations. For instance, dogs are not permitted in The Lyde Garden. Always check local signage and respect private property rules when visiting with your dog.
The best time to visit largely depends on your preferred activities. Spring and summer offer lush greenery and pleasant weather for walking and exploring gardens like The Lyde Garden. Autumn provides beautiful foliage, while winter can offer crisp, quiet walks, though some paths might be muddy. Always check weather conditions before your visit.
Visitors appreciate the peaceful natural settings and the unique character of each water body. The geological significance of places like Old Kiln Lakes Wetland Habitat and the tranquil beauty of The Lyde Garden are often highlighted. The area offers a chance to connect with nature and history, with many finding the landscapes striking and serene.
Specific accessibility information for each lake is limited. Generally, natural trails and paths around lakes can be uneven. For easier walks, consider checking the 'easy' graded routes in the Easy hikes around Longwick-Cum-Ilmer guide, but always verify the terrain suitability for your specific needs.
Parking availability varies by location. For specific highlights like The Lyde Garden, it's advisable to check their website or contact them directly for visitor information. For other natural areas, look for designated car parks near trailheads or consider local village parking, always being mindful of residential areas and local regulations.


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