Bouldnor Cliff is a submerged prehistoric settlement site in the Solent, England. Discovered in 1999 when a lobster was observed discarding worked flint tools from its burrow on the seabed, the site preserves organic materials that do not normally survive on dry land, making it important to the understanding of Mesolithic Britain [1]. BBC Radio 4's Making History programme described it as "probably Europe's most important Mesolithic site" albeit concealed under water [2].
Bouldnor Cliff

| Type | Underwater structures |
|---|---|
| Period | < 4500 BC |
| Country | England |
| Coordinates | 50.7137° N, 1.4640° W |
England