- Wales
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'100th birthday' for Welsh caves
The spectacular Dan-yr-Ogof cave system at the top of the Swansea Valley was discovered 100 years ago today.
Live updates
How the Dan-yr-Ogof caves were first discovered - and how there's much more left to find
The Dan-yr-Ogof Showcaves were discovered 100 years ago today by local farmers, in the hills of the Upper Swansea Valley. As James Wright finds, they offer a glimpse much deeper into Wales' geological past.
- ITV Report
100 years since Dan-yr-Ogof caves discovery
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100 years since Dan-yr-Ogof caves discovery
Today marks a hundred years since the caves at the top of the Swansea Valley were discovered.