Because its huge circular reflecting screen looks like a circular fence, the antenna has been colloquially referred to as the elephant cage.

The space included an elephant cage, a pool for seals, and an elevator large enough and powerful enough to haul elephants to the stage.

You can still see the big Flare-9 antenna - nicknamed the elephant cage - they used.

Located between Imperial Beach and Silver Strand State Beach near San Diego in southern California, USA, this facility is known by locals as the "elephant cage" which is a nickname for the large Wullenweber direction finder antenna.

The ad featured a janitor at a zoo sweeping out the elephant cage completely unbeknownst to the animal.

I tried to head her off with the punchline from the old joke about the kid shoveling out the elephant cage in the circus whose father offers to take him back and set him up with a decent job.

All this was accomplished by using the AN/FLR-9 antenna (or the Flare 9 or elephant cage) as it was sometimes called.

Wullenweber arrays for high-frequency signals are enormous, referred to as "elephant cages" by their users.