Trefignath, Neolithic burial chamber in Holyhead, Wales.
Trefignath is a Neolithic burial chamber comprising three megalithic stone structures with upright stones and two large capstones positioned at different levels. The site features multiple burial chambers arranged in a connected layout, demonstrating how ancient people constructed mortuary spaces.
The site was built over about 1500 years, beginning around 5750 years ago and ending around 4250 years ago, with significant modifications between these dates. Excavations revealed the builders repeatedly enlarged and reorganized the chambers before the site was finally abandoned.
The name comes from Welsh meaning 'house of fire', suggesting early settlement in the area. Visitors can observe how the stones align with the winter sunrise, revealing the ancient builders' connection to celestial events.
The site is easily reached from the A55 road with parking available nearby. A short walk across fields brings you to the stones, though wet weather can affect ground conditions underfoot.
Nearby peat deposits preserve pollen records showing how vegetation transformed since the Ice Age from arctic shrubs to deciduous forests. This pollen archive helps scientists understand the environment where the builders lived.
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