Question: The eastern terminus of Grand Junction Road is in the suburb of Hope Valley, at the intersection of Hancock Road and Lower North East Road, just before the latter proceeds into the Adelaide Hills, past a park managed by a what volunteer group? 

Context paragraphs:
Churchill Road: Churchill Road is an arterial road in the inner northwestern suburbs of Adelaide, Australia.  Entirely designated route A22, the road commences at Torrens Road, Ovingham and travels north to Grand Junction Road (A16).  Route A22 continues northeast from Grand Junction Road on Cavan Road to meet Port Wakefield Road (State route A1).

Grand Junction Road: Grand Junction Road is the longest east–west thoroughfare in the Adelaide metropolitan area, and is located approximately 9 kilometres north of the city centre.  Travelling from the Port Adelaide region, it is mostly a double-lane sealed road (becoming a single-lane road past Tolley Road intersection at Hope Valley, South Australia) running 21 kilometres to the base of the Adelaide Hills.  The western terminus is at the intersection of Old Port Road, 300 metres east of a causeway, which separates the Port River from West Lakes.  The 2.4 kilometre section of road that continues west of Old Port Road to Semaphore South is named Bower Road.  The eastern terminus of Grand Junction Road is in the suburb of Hope Valley, at the intersection of Hancock Road and Lower North East Road, just before the latter proceeds into the Adelaide Hills, past Anstey Hill Recreation Park and on towards the towns of Houghton and Inglewood.

Rosewater, South Australia: Rosewater is one of the western suburbs of Adelaide and is located 10 km north-west of Adelaide's central business district (CBD).  Although mainly residential, there are many shops along Grand Junction Road and the retired "Rosewater Loop" railway line runs through the suburb.  Rosewater is split in half by Grand Junction Road and bordered on the east by Addison and on the south by Torrens Road.

Division of Makin: The Division of Makin is an electoral division for the Australian House of Representatives located in the northeastern suburbs of Adelaide.  The 130 km² seat covers an area from Little Para River and Gould Creek in the north-east to Grand Junction Road in the south and Port Wakefield Road in the west, including the suburbs of Banksia Park, Fairview Park, Golden Grove, Greenwith, Gulfview Heights, Ingle Farm, Mawson Lakes, Modbury, Para Hills, Para Vista, Pooraka, Redwood Park, Ridgehaven, Salisbury East, Salisbury Heights, St Agnes, Surrey Downs, Tea Tree Gully, Valley View, Vista, Walkley Heights, Wynn Vale, Yatala Vale, and parts of Gepps Cross and Hope Valley.

Anstey Hill Recreation Park: Anstey Hill Recreation Park is a 362 ha protected area established in 1989 and located approximately 19 km northeast of Adelaide, South Australia.  The park is a significant reserve of bushland in the foothills of the Mount Lofty Ranges and is home to rare or vulnerable native plants and animals, and problematic invasive species.  It is managed by the City of Tea Tree Gully, the Department of Environment, Water and Natural Resources and a volunteer group—The Friends of Anstey Hill.  The park is designed for recreational walking and has no visitor facilities.  It is managed in association with the regional planning initiative known as of Yurrebilla, the Greater Mount Lofty Parklands.

Prospect Road, Adelaide: Prospect Road is a north-south road in the inner north suburbs of Adelaide, Australia.  The road commences where O'Connell Street branches north east into Main North Road and Prospect Road continues the path north.  The road terminates in the industrial suburb of Gepps Cross just north of Grand Junction Road.

Junction Road Halt railway station: Junction Road Halt, also known as Junction Road (for Hawkhurst), was a halt station on the Kent and East Sussex Railway.  It was located on the eastern side of the level crossing across the B2244 Junction Road near the hamlet of Udiam in East Sussex, England.  Closed for passengers in 1954 and freight in 1961 with the line, The line through Junction Road Halt may yet be revived as the Rother Valley Railway, a preservation society, is proposing to reopen the line from Robertsbridge to Bodiam.

North-South Motorway: The North-South Motorway (previously known as the South Road Superway) is an elevated motorway in the northern suburbs of the South Australian capital city of Adelaide.  It has been constructed over a 4 km section of South Road as part of a long term plan to upgrade this road into a non-stop north-south route.  At a cost of A$812 million, the motorway is the biggest single investment in a road project in South Australia’s history.  The North-South Motorway is stage two of the North–South Corridor upgrade and delivers a 4.8 kilometre section of freeway grade road, including a 2.8 kilometre elevated roadway, from the Port River Expressway to Regency Road.  Along the way, it passes over the Dry Creek-Port Adelaide railway line, Cormack Road, Grand Junction Road and Days Road, with exits at Grand Junction Road and Days Road.

Lower North East Road, Adelaide: Lower North East Road or A11 highway is a road connected to National Route A17 (Portrush Road) in South Australia.  This major arterial road in Adelaide's North East begins at Glynde, South Australia and continues through to its terminus at Hope Valley, where it meets the Eastern Terminus of Grand Junction Road.  It is used as an alternative route to the more congested North East Road.

Tennessee State Route 368: Tennessee State Route 368 is a Tennessee designated state route in Grand Junction, Tennessee.  It is approximately 1.7 miles long.  It begins as a fork in the road from Tennessee State Route 18 and travels nearly due south, intercepting Old Grand Junction Road and Summit Street.  From this point it runs slightly parallel to the rarely used Mississippi Central Railroad and Tippah Street.  It intercepts Tennessee State Route 57 as a T-junction in downtown Grand Junction, Tennessee and stops there.

Supporting paragraphs: Grand Junction Road Anstey Hill Recreation Park
Answer: The Friends of Anstey Hill