Lockeridge Dene and Piggledene: Ancient Sarsen Stone Valleys of Wiltshire

Ancient Geological Marvels of Wiltshire

Lockeridge Dene and Piggledene are distinguished by their extensive 'boulder streams'—natural arrangements of sarsen stones deposited during the Ice Age over 30 million years ago. These large sandstone blocks were shaped and scattered by glacial movements and have since become a defining feature of the Marlborough Downs landscape. The sarsens here are the same type of stones historically used to construct Stonehenge and Avebury, linking these valleys to some of Britain's most famous prehistoric sites.

Tranquil Valleys Rich in Biodiversity

The two valleys provide a sanctuary for rare lichens, mosses, and wildflowers, including orchids and meadow saxifrage that thrive between the stones. Windblown hawthorns, majestic oaks, and ash trees dot the valley floors, enhancing the serene atmosphere. Seasonal changes bring diverse experiences: cattle graze in summer, while winter unveils open fields and former riverbeds lined with tall grasses. This natural setting supports a variety of insects and butterflies, contributing to the ecological richness.

Historical and Cultural Significance

The National Trust acquired these sites over a century ago to preserve one of the last unspoiled boulder fields in the region, protecting both natural heritage and archaeological interest. The stones have witnessed millennia of human presence, with the landscape evoking a sense of timelessness and mystery. The nearby thatched cottages and misty hillsides frame the stones, offering visitors a glimpse into the rural heritage of Wiltshire.

Visitor Experience and Exploration

Visitors can explore the gentle valleys on foot, wandering among moss-covered stones and ancient trees. The terrain is natural and uneven, with grazing cattle in summer adding to the pastoral charm. While parking is limited near Lockeridge Dene, the village offers safe parking areas. Piggledene lies adjacent to the busy A4 road, requiring a short walk from nearby parking. The sites are peaceful and contemplative, ideal for those interested in geology, history, and nature.

Conservation and Access

Lockeridge Dene and Piggledene are managed to maintain their ecological and historical integrity. The National Trust encourages visitors to respect the delicate habitats and follow Leave-No-Trace principles. Access is open year-round, with no formal opening hours, allowing visitors to experience the sites in all seasons. The valleys are best suited to walkers comfortable with natural terrain; they are not wheelchair or pushchair accessible.

Setting Within Wiltshire’s Sacred Landscape

Situated near world-renowned Neolithic and Bronze Age monuments, these valleys form part of a larger sacred landscape in South West England. The presence of sarsen stones here connects Lockeridge Dene and Piggledene to the wider prehistoric narrative of the region, offering a quieter, less-visited complement to the famous stone circles. Their natural beauty and ancient origins provide a unique window into the geological and cultural history of Wiltshire.