Mudlarking: Getting Started on River Foreshores
Mudlarking is the practice of searching the exposed foreshore of tidal rivers for artifacts. It's most associated with the Thames in London, where the river gives up finds spanning two thousand years, but any tidal river near historic settlement can produce interesting material. The best part: you don't need a metal detector, just your eyes and a willingness to get muddy.
How It Works
Tidal rivers expose their foreshores twice daily at low tide. The river continually erodes banks and disturbs its bed, bringing new objects to the surface with each tidal cycle. You walk the exposed foreshore at low tide, scanning the surface for artifacts among the gravel, stones, and debris.
What You Find
River foreshores produce an enormous variety of material: clay pipe stems and bowls (extremely common on the Thames), pottery sherds, animal bones, coins, buttons, glass, worked stone, and occasionally spectacular finds like Roman coins, medieval pilgrim badges, or Tudor-era jewelry. Items that fall or are thrown into a river are protected from plow damage and can be remarkably well-preserved.
Essential Gear
- Waterproof boots or wellies
- Gloves (foreshore debris includes broken glass and sharp metal)
- A small trowel or scraper
- Bags or containers for finds
- Tide tables for your river
The Thames and Permits
In London, mudlarking on the Thames requires a permit from the Port of London Authority. Standard permits allow surface finds only; digging requires a more advanced permit. Similar regulations may apply to other rivers. Always check local rules before heading out.