Qualla: Pontcysyllte Aqueduct https://qualla.com/pontcysyllte-aqueduct en-us © 2026 Bendyline Mon, 20 Jul 2026 10:21:21 GMT Qualla serial false Qualla support@bendyline.com yes https://qualla.com/_m/g/c/m/v/pontcysyllte-aqueduct-wp/hero-small.webp Qualla: Pontcysyllte Aqueduct https://qualla.com/pontcysyllte-aqueduct Pontcysyllte Aqueduct: Introduction https://qualla.com/pontcysyllte-aqueduct/ Photo credit The original uploader was Akke at English Wikipedia., CC BY-SA 2.0. The helmsman of a narrowboat crossing the Pontcysyllte Aqueduct has no railings on the canal side. The cast-iron trough rises barely six inches above the waterline, and the River Dee flows 126 feet below. There is nothing between the boat and the abyss but a thin lip of metal and the steadiness of one's nerve. This is Thomas Telford's masterpiece, completed in 1805, the highest navigable aqueduct in the world and a structure so audacious that the public considered it impossible right up until the moment it worked.

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Image: The original uploader was Akke at English Wikipedia. | CC BY-SA 2.0

]]> Sat, 14 Mar 2026 00:00:00 GMT https://qualla.com/_m/g/c/m/v/pontcysyllte-aqueduct-wp/gcmv-pontcysyllte-aqueduct-intro.mp3 0:06 1 full Pontcysyllte Aqueduct: Blood, Iron, and Flannel https://qualla.com/pontcysyllte-aqueduct/ Photo credit Prlewis at English Wikipedia, CC BY 2.5. The aqueduct's construction reads like an inventory of Georgian ingenuity. The mortar binding its eighteen hollow masonry piers uses lime, water, and ox blood, a technique dating to antiquity that strengthens the mixture against freeze-thaw cycles. The cast-iron trough plates wer...

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Image: Prlewis at English Wikipedia | CC BY 2.5

]]> Sat, 14 Mar 2026 00:00:00 GMT https://qualla.com/_m/g/c/m/v/pontcysyllte-aqueduct-wp/gcmv-pontcysyllte-aqueduct-blood-iron-and-flannel.mp3 0:06 2 full Pontcysyllte Aqueduct: The Canal That Never Was https://qualla.com/pontcysyllte-aqueduct/ Photo credit A1chap Tony, CC BY-SA 4.0. Pontcysyllte was meant to be the centerpiece of something far grander. The Ellesmere Canal would have linked the River Severn at Shrewsbury to the Port of Liverpool on the River Mersey, creating a commercial corridor across the Welsh-English borderlands. The westerly route throug...

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Image: A1chap Tony | CC BY-SA 4.0

]]> Sat, 14 Mar 2026 00:00:00 GMT https://qualla.com/_m/g/c/m/v/pontcysyllte-aqueduct-wp/gcmv-pontcysyllte-aqueduct-the-canal-that-never-was.mp3 0:06 3 full Pontcysyllte Aqueduct: The Physics of Floating https://qualla.com/pontcysyllte-aqueduct/ Photo credit PAUL FARMER, CC BY-SA 2.0. A canal aqueduct obeys a principle that seems counterintuitive until you think it through. Thanks to Archimedes, the weight on the bridge remains virtually constant whether a narrowboat is crossing or not. A boat displaces exactly its own weight in water, pushing that water off t...

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Image: PAUL FARMER | CC BY-SA 2.0

]]> Sat, 14 Mar 2026 00:00:00 GMT https://qualla.com/_m/g/c/m/v/pontcysyllte-aqueduct-wp/gcmv-pontcysyllte-aqueduct-the-physics-of-floating.mp3 0:06 4 full Pontcysyllte Aqueduct: From Industry to Wonder https://qualla.com/pontcysyllte-aqueduct/ Photo credit Adrian Pingstone, Public domain. By the 1980s, the former Ellesmere Canal had been rebranded as the Llangollen Canal, and leisure boats had replaced coal barges. The canal became one of the most popular holiday waterways in Britain, largely because of the aqueduct and the dramatic scenery of the Dee Valley. In 2...

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Image: Adrian Pingstone | Public domain

]]> Sat, 14 Mar 2026 00:00:00 GMT https://qualla.com/_m/g/c/m/v/pontcysyllte-aqueduct-wp/gcmv-pontcysyllte-aqueduct-from-industry-to-wonder.mp3 0:06 5 full