Wookey Hole Caves Age, possibly around 250-300 BC, while nearby Hyena Cave was occupied by Stone Age hunters. Badger Hole and Rhinoceros Hole are two dry caves on the slopes above the Wookey ravine near the Wookey Hole resurgence and contain in situ cave sediments laid down during the Ice Age. Just outside the cave the foundations of a 1st-century hut have been identified. These had been built on during the Roman era up to the end of the 4th century. In 1544 products of Roman lead working in the area were discovered. The lead mines across the Mendips have produced contamination of
Alyn Valley Woods and Alyn Gorge Caves helleborine and wayfaring tree. There are also areas of calcareous grassland with plants such as bloody cranesbill and lesser meadow-rue. Much of the site lies on an escarpment of Carboniferous limestone and there are three cave systems: Ogof Hesp Alyn, Ogof Hen Ffynhonnau and Ogof Nadolig. Lead ore, zinc ore, limestone and calcite were formerly mined in the area. Alyn Valley Woods and Alyn Gorge Caves Alyn Valley Woods and Alyn Gorge Caves is a Site of Special Scientific Interest on the border of Flintshire and Denbighshire in north Wales. Most of the site is also designated as the Alyn