The landscape at Totternhoe Knolls and Quarry  is the result of many centuries of quarrying, which has developed into flower-rich chalk grasslands. The reserve can be accessed from the National Trust car park off Castle Hill Road (OS ref SP986217). The site is crossed by green lanes and footpaths, allowing lots of exploration. In spring the reserve is home to several orchids and on sunny days, there are also likely to be plenty of butterflies, including the Duke of Burgundy and Small Blue. The reserve also has Chiltern gentian,  a rare flower, in bloom in August.