BLACKCHURCH ROCK ARCH STACK MOUTHMILL DEVON
This amazing natural double sea arch stack, Blackchurch Rock, at Mouthmill beach near Clovelly and Hartland, North Devon, SW England, UK. A dominant geological feature of the local landscape it can be seen clearly from the coastal path and stands about 60 feet (over 18 m) high. The arch comprises sandstone and shale rock layers known as the Upper Carboniferous Crackington Formation and was formed from the erosion of ancient cliffs and headlands. This stretch of coast comprises of some incredibly folded, upturned and faulted layers of rock that were subject to immense pressures during ancient geological and volcanic events following the meeting of tectonic plates. Local geology displays large scale Chevron folds formed during a mountain building event, known as the Variscan Orogeny. There are also impressive hanging valleys nearby where waterfalls plunge to beaches where coastal erosion has terminated their natural course. Historically the small and relatively unknown cove was infamous for smuggling and also for importing lime from Wales to improve soils. There is a derelict lime kiln near to the beach.
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