Water End Swallow Holes, Geological site in Welham Green, United Kingdom
Water End Swallow Holes extends across 11.3 hectares of land, featuring fifteen natural sinkholes formed in the chalk bedrock of Hertfordshire.
The site received its designation as a Site of Special Scientific Interest in 1986, marking its importance for geological and biological research.
These limestone formations serve as an educational resource for scientists and researchers studying the natural drainage systems of southeastern England.
Visitors can access the site through Station Road, with the Welwyn Hatfield District Council maintaining oversight of the protected area.
The deep water sections contain Reed Sweet-grass populations, while a willow carr swamp system develops adjacent to the permanent chalk sinkholes.
GPS coordinates: 51.72390,-0.22064
Latest update: March 6, 2025 15:03
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