The Cotswolds is an area in south central England containing the Cotswold Hills, a range of rolling hills which rise from the meadows of the upper Thames to an escarpment, known as the Cotswold Edge, above the Severn Valley and Evesham Vale. The area is defined by the bedrock of Jurassic limestone that creates a type of grassland habitat rare in the UK and that is quarried for the golden coloured Cotswold stone. It contains unique features derived from the use of this mineral; the predominantly rural landscape contains stone-built villages, historical towns and stately homes and gardens.