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Mae’n ddrwg gennym ‘dyw’r bennod yma ddim ar gael ar hyn o bryd

Palu am hanes strwythur anhygoel sydd wedi ei gladdu â thywod ers canrifoedd, nesaf at yr M4. Uncovering the mystery of a huge structure hidden by sand for centuries near the M4 in Kenfig.

24 o funudau

Darllediadau

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