Bu Môr Hafren, â'i gerrynt pwerus, yn ffin rhwng dwy genedl am ganrifoedd, a hyd nes i Bont Hafren gael ei hagor yn 1966, yr unig ffordd i groesi'r aber oedd ar y fferi neu'r twnnel rheilffordd.
English Description: With its powerful tides and one of the highest tidal ranges in the world, the Severn Estuary was a barrier between two nations, and until the Severn Bridge was opened in 1966, the only way to cross the Severn Estuary was by ferry or railway tunnel.
ISBN: 9781445669021
Awdur/Author: Chris Witts
Cyhoeddwr/Publisher: Amberley Publishing
Dyddiad Cyhoeddi/Publication Date: 2017-08-15
Tudalennau/Pages: 96
Iaith/Language: EN
Argaeledd/Availability: Available
Cyfnod Allweddol/Key Stage: X
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