is a diverse community of plants dominated by oak and hazel on rich soils overlying chalk. Further up the trees are mainly beech on Thanet Sands, and towards the top the main trees are oak and birch on the acidic Blackheath pebble beds. The Thanet Sands have eroded, but the Blackheath beds are bound by a natural cement, and this has resisted erosion to make a natural cap to the hill. The top is mainly bare of trees, with rounded pebbles made when the area was the base of shallow seas in the Eocene epoch around 50 million years ago. The sparse vegetation at the top is mainly wavy hair-grass, heather and bilberry. Croham Manor Conservation Area The Croham Manor Road Conservation Area lies in South Croydon, running from the junction with the Selsdon Road along the West side of Croham Hurst. The area is notable for its distinctive and planned 1930s architecture. South Croydon Bus Garage South Croydon bus garage is located on the corner of Brighton and Napier Roads. The site was previously the location of Crunden Place stables that were used by coaching companies. Built by the London General Omnibus Company, the garage was handed over to Thomas Tilling upon opening on 23 January 1916 as part of an agreement between the two operators. In 1933 it passed with the business to the London Passenger Transport Board and each subsequent operator of the London Transport brand. The garage had to have roof reconstruction in the early 1930s to allow double decker buses to use the it. The building was destroyed in May 1941 in an air raid that killed seven staff. The reconstruction was not completed until the mid-1950s. As part of the privatisation of London bus services, in January 1995 it was sold to Arriva London with the South London business unit. Arriva continue to use it to operate services under contract to Transport for London. 46 South End 46 South End is Croydon's oldest surviving shop. The building is Grade II listed, dating back to the 17th century. It retains its original timber framing and the front has distinctive and attractive elevations. The rear of the building is partly of modern construction. Since 1985 it has been home to Just Flutes, a music shop. The Red Deer This Victorian era inn was open by 1851 in a prominent location on the Brighton Road. It acted