Mardley Heath, Nature reserve and hiking area in Hertfordshire, England
Mardley Heath is a nature reserve in Hertfordshire, England, covering roughly 37 hectares of woodland. The terrain features oak and beech forests, seasonal ponds, and former gravel pits connected by a network of walking paths.
The land started as medieval grazing and fuel collection grounds before becoming a gravel quarry in the mid-20th century. After extraction ceased, it was restored and established as a protected nature reserve.
The site serves as a gathering point where local people enjoy dog walking and bird watching throughout the seasons. Visitors use the trails as part of their regular connection with the natural environment.
Parking is available at postcode AL6 0TP, and multiple entrance points provide easy access to clearly marked trails throughout the site. The paths are straightforward to follow and suit different fitness levels.
A large beech tree with exposed roots forms a natural climbing structure and creates a sheltered space beneath its base. This formation often goes unnoticed by casual visitors but becomes a memorable finding during a walk.
GPS coordinates: 51.84940,-0.19250
Latest update: December 14, 2025 16:47
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