The rock outcrops at places on the Cotswold Edge; small quarries are common. The exposures are rarely sufficiently compact to be good for rock-climbing, but an exception is Castle Rock, on Cleeve Hill, near Cheltenham. Due to the rapid expansion of the Cotswolds in order for nearby areas to capitalize on increased house prices, well known ironstone villages, such as Hook Norton, have even been claimed by some to be in the Cotswolds despite lacking key features of Cotswolds villages such as Cotswold stone and are instead built using a deep red/orange ironstone, known locally as Hornton Stone.