Best natural monuments around Cholsey include a variety of natural features and notable landmarks. Cholsey, a village in Oxfordshire, offers diverse ecological interest and scenic beauty, particularly along the River Thames. The area is home to significant natural attractions like the Cholsey Marsh Nature Reserve and the iconic Wittenham Clumps. These sites provide opportunities to explore rich wildlife, rare flora, and historical landscapes.
Last updated: October 2, 2026
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Day's Lock is a lock on the River Thames near Dorchester-on-Thames, Oxfordshire, England on the Dorchester side of the river. The pound lock was built in 1789 by the Thames Navigation Commissioner. The lock is across the river from the small village of Little Wittenham and is overlooked from the south by the hills of Wittenham Clumps, with a particularly good view from Round Hill. The weir runs straight across the river from the other side of the lock island. Day's Lock is the main gauging station for the measurement of the water flow in the River Thames.
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Little Wittenham Wood has been designated as both a Site of Special Scientific Interest (SSSI) and a Special Area of Conservation (SAC), reflecting its international importance for wildlife. The nature reserve is particularly important for the endangered species, the Great Crested Newt. This shy amphibian uses the many ponds within the nature reserve to breed, but it spends the majority of time in the surrounding woodland. Tucking itself quietly away in safe and secure hidden spots, you have to search carefully to find them. Much easier to spot are the dragonflies and damselflies which hover around the ponds. If you wander down to the bird hide, at the river’s edge, you might be lucky enough to catch a glimpse of Kingfishers or Otters.
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Nice little lung opener first thing in morning. Entry to wooded area was permitted, has a few dens inside and plenty of benches externally, views to take in are beautiful. on a clear day can see for miles
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Located just across the river from the small town of Little Wittenham is this lock that provides glorious views up and down the River Thames.
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The Barrow, it seems, is on private land. The footpath goes right before you get there. There are several signs making it clear the owner of the land doesn't want people wandering around the Barrow, which is on the top of the hill.
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Beautiful woodland below Wittenham clumps. Good paths and lovely nature.
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Cholsey is home to diverse natural features, including the tranquil Cholsey Marsh Nature Reserve, known for its rich biodiversity and rare summer snowflakes. Nearby, the iconic Wittenham Clumps offer panoramic views and historical significance, while Hartslock Nature Reserve provides breathtaking views over the River Thames and Goring Gap.
Cholsey Marsh is a biodiversity hotspot. You can spot a wealth of birds, including ducks, waders, warblers, and reed buntings, with over 150 species recorded. It's also a nationally important winter roost for Corn Buntings. In summer, look out for numerous dragonflies and damselflies, such as the club-tailed and white-legged species, and kingfishers hunting along the river.
Yes, Wittenham Clumps are steeped in history, with evidence of Bronze Age, Iron Age, and Roman occupation. The curved ramparts of Castle Hill, one of the Clumps, date back to the Iron Age, making it a significant historical natural monument.
The best time depends on what you wish to see. Late spring is ideal for spotting the rare summer snowflake at Cholsey Marsh. Summer brings out dragonflies and damselflies. The panoramic views from Wittenham Clumps and Hartslock Nature Reserve are enjoyable year-round, though paths may be muddier in winter.
Absolutely. Wittenham Clumps offers easy walking paths and picnic spots, making it great for families. Day's Lock provides lovely riverside views, and Little Wittenham Wood is excellent for exploring nature with good paths and opportunities for wildlife spotting.
Cholsey Marsh Nature Reserve is particularly known for the summer snowflake (also called the Loddon lily), a national rarity in the UK. It thrives in the Thames Valley marshes and riverbanks, blooming in late spring with delicate green markings on its white petals.
The area around Cholsey offers various outdoor activities. You can explore MTB trails, enjoy gravel biking routes, or go running. The Thames Path also runs through Cholsey Marsh, offering picturesque riverside walks.
Yes, Cholsey Marsh is accessible via Ferry Lane from Cholsey, with parking available close to the river. For Wittenham Clumps, you can find parking near Little Wittenham Church (for about 10 cars) or at a larger main car park closer to the top of the hill (for about 30 cars).
Little Wittenham Wood is designated as both a Site of Special Scientific Interest (SSSI) and a Special Area of Conservation (SAC). It's crucial for the endangered Great Crested Newt, which breeds in its ponds. You can also spot dragonflies, damselflies, and potentially kingfishers or otters near the river's edge.
Yes, Wittenham Clumps provides breathtaking panoramic views over the River Thames and the surrounding countryside. Hartslock Nature Reserve also offers stunning vistas over the River Thames and the Goring Gap.
Day's Lock is a lock on the River Thames near Dorchester-on-Thames. It offers glorious views both up and down the River Thames and is overlooked by the hills of Wittenham Clumps, particularly from Round Hill. It's also a main gauging station for measuring the Thames' water flow.
Visitors frequently praise the stunning views from places like Wittenham Clumps and Hartslock Nature Reserve. The easy walking paths, rich wildlife, and historical significance of these sites are also highly appreciated, making them ideal for serene natural beauty and exploration.


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