Denge, Kent · Before radar
These aren't sculptures. They're ears.
Before radar, Britain listened for bombers with concrete dishes. At Denge in Kent it built a 20-foot dish, a 30-foot dish and a 200-foot wall.
What is said in this reel
These aren't sculptures, they're ears. Before radar, Britain tried to hear enemy bombers coming. From about 20 miles out at sea, the concrete caught the sound of engines. Microphones and a stethoscope carried it to a listener. At Denge, in Kent, they built three: a 20-foot dish a 30-foot dish, and a wall 200 feet long. More went up along the coast. From Kent to Yorkshire, even Malta got one. At best, they gave about 15 minutes of warning, but planes kept getting faster. By the time a bomber was heard, it was almost in sight. In 1935, Britain tested radar. It made the ears obsolete. But they're still here, on an island, in a nature reserve, still listening.
Credits and sources
- Footage: YouTube videos by Mensch Films, heffone1, B M Wood, Flying Cockney, Dronelife with Jack's, Trevor Smith and Aquazoom Amir Weizman
- "Round acoustic mirror - Denge - Kent - England - 19July2009" by Bodacea, CC BY-SA 2.0, via Wikimedia Commons
- "200 ft Acoustic mirror at Denge" by Keith Jump, CC BY-SA 3.0, via Wikimedia Commons
- Photos: U.S. Army sound-locator photographs (public domain)
- Posters: AI-generated illustrations (labelled on screen)
- Narration: AI-generated voice.
