RAF Dry Tree was a Royal Air Force early warning radar station for detecting enemy aircraft during the Second World War.

[1][2] It was named from the standing stone on the land known as the Dry Tree menhir.

The nerve centre was the receiver block which now has public access to the roof, giving excellent views across the Downs.

The location of the menhir was where the boundaries for six parishes met in medieval times.

It was dug out during the 19th century (by gold hunters) and was put back in its upward position in 1927, after World War I, but soldiers had cut one meter off its top.