Hen cloud
The Roaches, Hen Cloud and Ramshaw Rocks are formed from a thick bed of coarse sandstone ('gritstone') of Namurian age, a subdivision of the NW European Carboniferous system from ca 315 to 326.4 Ma, which occurs widely across the Peak District and takes its name, the Roaches Grit, from this location. The nearby Five Clouds are formed from a thinner bed of similar sandstone known as the Five Clouds Sandstone. These sandstones originated as delta sands dropped by major rivers draining a mountainous landmass to the north. The sandstone beds of both The Roaches and Hen Cloud dip moderately steeply to the east into the north–south-aligned syncline known as the Goyt Trough. The same beds at Ramshaw Rocks dip steeply to the northwest into the syncline. The southern end of the Roaches is defined by the presence of an east–west fault that runs through the col separating the Roaches from Hen Cloud
Hen cloud
The Roaches, Hen Cloud and Ramshaw Rocks are formed from a thick bed of coarse sandstone ('gritstone') of Namurian age, a subdivision of the NW European Carboniferous system from ca 315 to 326.4 Ma, which occurs widely across the Peak District and takes its name, the Roaches Grit, from this location. The nearby Five Clouds are formed from a thinner bed of similar sandstone known as the Five Clouds Sandstone. These sandstones originated as delta sands dropped by major rivers draining a mountainous landmass to the north. The sandstone beds of both The Roaches and Hen Cloud dip moderately steeply to the east into the north–south-aligned syncline known as the Goyt Trough. The same beds at Ramshaw Rocks dip steeply to the northwest into the syncline. The southern end of the Roaches is defined by the presence of an east–west fault that runs through the col separating the Roaches from Hen Cloud