Best natural monuments around Mildenhall offer a diverse landscape shaped by geological history. The area features unique natural formations and historical sites that provide insight into ancient civilizations. These locations are characterized by their distinct geological features and often support varied ecosystems. Exploring these natural monuments allows visitors to experience the region's natural heritage and historical significance.
Last updated: June 30, 2026
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Devil's Den stone monument is a Neolithic dolmen (burial chamber) located in Wiltshire, near Marlborough, not Sturminster Newton. The structure features a massive 17-ton capstone resting on two upright sarsen stones. Local folklore claims that if water is poured into the hollows on the capstone, the Devil himself will come during the night to drink it. It was largely reconstructed in 1921 after the chamber collapsed.
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Sidbury Hill, or Sidbury Camp, is the site of an Iron Age bivallate hillfort on the eastern edge of Salisbury Plain in Wiltshire, England. The site is sub-triangular in shape, approximately 17 acres in area, and is constructed on the site of a Neolithic settlement. The hill offers excellent defensive slopes on all sides, which have been supplemented by the double ditch and rampart earthworks. The settlement and hillfort were partially excavated in the 19th century and the 1950s; there were finds of pottery and other artefacts. A Neolithic settlement site was discovered during the excavation in the 1950s, being of a section of the south-east rampart of the hillfort. A number of flint flakes and tools were recovered. The site is a scheduled national monument. Trees planted in the 1960s were removed from 2002 and the area was allowed to revert to the natural chalk downland. Access to the site is difficult as it is on, or near, Ministry of Defence land, and there are many tank tracks and occasional artillery firing in the area. There are also numerous ditches, barrows, trackways, field systems, and tumuli in the area. Due to erosion issues climbing on the barrow is now forbidden. Such a shame, but understandable.
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A well preserved bell barrow, the mound of which measures 22m in diameter and stands up to 2.8m high. The mound is surrounded by a berm up to 5m in diameter and a ditch 0.7m deep and up to 6.2m wide. One of these two bell barrows produced a sherd of Bronze Age pottery and a fragment of a polished greenstone axe, both found by Owen Meyrick. A bell barrow, the mound of which measures 24m in diameter and stands 2.7m high. The berm and ditch which surround this barrow have been levelled by cultivation on three sides but survive as buried features on the fourth. From measurements on the western side it can be seen that the berm is c.3m wide and that the ditch is c.5m wide.
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Who wouldn't want to walk into a neolithic burial chamber? anybody? no? didn't think so!!! It was amazing!!! The monument includes six prominent Bronze Age round barrows which form part of a larger round barrow cemetery north-east of West Kennett Farm and west of the Ridgeway track on Overton Hill. This is the site of a round barrow which, despite being ploughed level, will contain archaeological information; the old ground surface beneath the mound and the surrounding quarry ditch, from which material was quarried during construction of the monument, will survive as buried features. The area of the mound has a diameter of 33m; the surrounding ditch is c.2m wide. A bowl barrow, the mound of which measures 41.5m in diameter and stands up to 1.2m high. The mound is surrounded by a ditch which has become infilled over the years but which survives as a buried feature c.3m wide. This barrow has been partially excavated on two occasions, in 1857 by Thurnham and again in 1882 by W & H Cunnington. The primary cremation burial was not located but two secondary cremations were recovered. One was located north- west of the centre of the mound and was accompanied by a flint scraper and a serrated flint flake; the other was situated east of the centre and contained pottery sherds of two vessels, a beaker and an urn, as well as a piece of antler and several bone pins. A bowl barrow, the mound of which measures 42m in diameter and stands up to 0.7m high. The barrow has been partially excavated on two occasions, in 1857 by Thurnham and in 1882 by Ponting. These revealed that the barrow mound contained a crouched skeleton in a grave partly lined and roofed with sarsens. This was covered by a sarsen cairn, itself ringed by a double circle of sarsen stones c.1m outside the edge of the cairn. There was no evidence of a ditch around this barrow. Other finds included a later crouched skeleton covered with sarsen stones, the skeleton of a child, three large urns full of burnt bones and the perforated head of a bone pin. A well preserved bell barrow, the mound of which measures 26m in diameter and stands up to 3m high. The mound is surrounded by a gently sloping berm or platform c.3m wide and a ditch 0.5m deep and up to 6.4m wide.
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In a field on Fyfield Down, 1 mile east of Marlborough, Wiltshire, stands the prehistoric burial chamber known as The Devil’s Den or Clatford Bottom Stone, a Neolithic monument from 5,000 years ago that is also known as a Dolmen (stone table). Get up here on a clear day, nice and early, and you'll witness the most amazing sunrise.
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A stunning little walk around the beautiful little village of Avebury home of the world's largest Neolithic stone circle along with stone avenues and ancient tombs. Much of Avebury and the surrounding landscape is owned and cared for by the National Trust and is free to explore for everyone all year round.
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The Mildenhall area is rich in natural features shaped by geological history. You can explore sites like Aspal Close Local Nature Reserve, known for its ancient oak pollards and unique glacial topography, or Cavenham Heath National Nature Reserve, which showcases a distinctive Breckland heathland habitat with dry, acidic sandy soil and the River Lark flowing through it.
Yes, the area around Mildenhall features several significant historical natural monuments. You can visit the impressive Avebury Stone Circle, a Neolithic henge monument where you can touch the ancient stones. Another must-see is West Kennet Long Barrow, a Neolithic burial chamber older than Stonehenge, which you can explore inside.
At Aspal Close Local Nature Reserve, you can observe a rich diversity of wildlife and plant life within its ancient wood pasture, including unique Breckland flora like Mouse ear and Wild Thyme. Cavenham Heath National Nature Reserve is home to a wide array of wildlife, including a healthy population of adders, Britain's only venomous snake, often seen basking in spring.
Absolutely. Both Avebury Stone Circle and West Kennet Avenue are considered family-friendly and offer engaging experiences for all ages. At Avebury, children can get up close and touch the ancient stones, while West Kennet Avenue provides an interesting path through standing stones.
You can enjoy various outdoor activities near the natural monuments. For instance, there are numerous easy hikes, running trails, and road cycling routes available around Mildenhall, allowing you to explore the diverse landscapes and historical sites.
Spring and summer are generally excellent times to visit to experience the full bloom of flora and observe wildlife. For stargazing, Cavenham Heath National Nature Reserve is particularly recommended due to its clear night skies and minimal light pollution, making it ideal on clear evenings year-round.
Yes, Cavenham Heath National Nature Reserve is a local favorite for stargazing. Its location benefits from minimal light pollution, offering exceptionally clear night skies, making it an ideal spot to observe celestial bodies.
The region's geological history is evident in several sites. Aspal Close Local Nature Reserve features undulating terrain resulting from glacial action during the last ice age, with ancient oak pollards growing on hummocks of chalk and sand. Cavenham Heath National Nature Reserve showcases the distinctive 'Brecks' landscape with its dry, acidic sandy soil.
For more detailed information about Aspal Close Local Nature Reserve, including visitor guidelines and specific features, you can refer to the official West Suffolk Council website: westsuffolk.gov.uk.
Many natural areas and trails around Mildenhall are dog-friendly, but it's always best to check specific reserve guidelines before your visit. For example, while exploring the general area, ensure dogs are kept under control, especially in nature reserves where wildlife is present, such as the adders at Cavenham Heath.
Visitors particularly enjoy the opportunity to get up close to ancient history, such as being able to touch the stones at Avebury Stone Circle or exploring inside the chambers of West Kennet Long Barrow. The unique landscapes, ancient trees, and diverse wildlife at places like Aspal Close and Cavenham Heath also receive high praise.
While not 'hidden' in the sense of being unknown, Aspal Close Local Nature Reserve is a less commonly highlighted gem. It's an internationally important northern outlier of unspoilt savannah, offering a unique glimpse into a medieval wood pasture with veteran trees and distinct glacial topography, providing a serene and historically rich natural experience.


Extend your search for the best caves by checking out these guides of the top ones around Mildenhall: