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Y Ddôl Uchaf means ‘the upper meadow’ which is its historic name before being worked as a tufa quarry and marl pit during the Second World War. The site was abandoned after this until 1965 when the local Wildlife Trust (then the North Wales Naturalist Trust) purchased it as a nature reserve. The reserve is 4ha and sits on part of the most extensive tufa deposits in the UK for which it is designated a SSSI. The site consists predominantly of secondary woodland and calcareous grassland. A number of small ponds have developed within the old quarry workings which support amphibians and reptiles like great crested newt and grass snake. There have been 12 species of dragonfly and damselfly recorded at the site. There are likely to be more species here, so if you spot a dragonfly here, please let us know!
The reserve can be accessed from the A541 from Mold or Denbigh, or off several exits off the A55 in Holywell area (these will then lead south to the A541). From Mold, take the A541 west for about 7-8 miles. Before Afonwen, turn right at Ddol by the bus stop, continue for 300m and turn left at the T-junction, the car park is on your left where there is space for a 4 cars.