Question: Who manages the conservation area that includes Sanstone Ranch?

Context paragraphs:
LaBarque Creek Conservation Area: LaBarque Creek Conservation Area (LCCA) consists of 1274 acre in northwestern Jefferson County, Missouri.  It is south of Pacific and southwest of Eureka.  The LCCA is part of the Henry Shaw Ozark Corridor.  The Young Conservation Area is about 2 mi to the east, Myron and Sonya Glassberg Family Conservation Area is 1.2 mi to the northeast, Pacific Palisades Conservation Area is 3.3 mi to the north, Catawissa Conservation Area is 3.5 mi northwest, and Robertsville State Park is 4.7 mi west.

Sandstone Ranch (Nevada): Sandstone Ranch or Sand Stone Ranch, as it was first known, was listed on the United States National Register of Historic Places on April 2, 1976.  The ranch is within the boundaries of the Spring Mountain Ranch State Park and Red Rock Canyon National Conservation Area and sits below the Wilson Range.

Red Rock Canyon National Conservation Area: The Red Rock Canyon National Conservation Area in Nevada is an area managed by the Bureau of Land Management as part of its National Landscape Conservation System, and protected as a National Conservation Area.  It is located about 15 mi west of Las Vegas, and is easily seen from the Las Vegas Strip.  The area is visited by more than two million people each year.

Everglades Protection Area: The Everglades Protection Area is a protected area of the Florida Everglades as defined by the Everglades Forever Act, and includes Water Conservation Area 1 (a.k.a. the Arthur R. Marshall Loxahatchee National Wildlife Refuge), Water Conservation Area 2, made up of WCA-2a and WCA-2b, Water Conservation Area 3, made up of WCA-3a and WCA-3b, and the Everglades National Park.

Darnley Cascade: Darnley Cascade is a 4 metre high cascade waterfall located at Crooks Hollow Conservation Area in Greensville, Hamilton, Ontario, Canada.  Nearby attractions include Bruce Trail, Dundas Valley Conservation Area, Spencer Gorge/Webster's Falls Conservation Area, Hermitage ruins, Royal Botanical Gardens, Dundurn Castle, Christie Lake Conservation Area, Dundas Historical Society Museum and Carnegie Gallery.

Peter Murrell Conservation Area: The Peter Murrell Conservation Area is located in Huntingfield, Tasmania, approximately 15 km south of the state's capital city, Hobart.  The conservation area has an area of 135 ha and is one of three reserves within the Peter Murrell Reserves.  Also within these reserves are the Peter Murrell State Reserve (133 ha ) and a Public Reserve (9 ha ).  These reserves and the Conservation Area lie at the base of the Tinderbox Peninsula, between the suburbs of Kingston, Howden and Blackman's Bay.  The Peter Murrell Conservation Area surrounds the northern, western and southern sides of the Peter Murrell State Reserve.

National Trust for Nature Conservation: The National Trust for Nature Conservation (NTNC), (राष्ट्रिय प्रकृति संरक्षण कोष) previously known as King Mahendra Trust for Nature Conservation is a Nepalese non-governmental organization working in the field of nature conservation. It was established in 1982 as an autonomous non profit organization by legislative law of Nepal.  NTNC's mission is to conserve nature and natural resources in Nepal while meeting the needs of the people in sustainable way.  Geographically, the Trust activities have spread from the sub-tropical plains of Chitwan, Bardia and Kanchanpur in the lowlands to the Annapurna and Manaslu region of the high Himalayas, including the trans-Himalayan region of Upper Mustang and Manang.  Currently, the projects of Trust are divided into three geographical areas - the lowland, the mid-hills (Kathmandu Valley) and the high mountains.  The Trust’s activities in the lowlands are based in and around the Chitwan National Park, the Bardia National Park and the Shuklaphanta Wildlife Reserve located in the central, western and far-western development regions of Nepal, through the Biodiversity Conservation Center (BCC) in Chitwan, the Bardia Conservation Program (BCP) in Bardia and the Suklaphanta Conservation Program (SCP) in Kanchanpur.  Similarly, the Annapurna Conservation Area Project (ACAP), the Manaslu Conservation Area Project (MCAP) and Gaurishankar Conservation Area Project (GCAP) are three protected areas managed by the Trust in the mountain region.  The Central Zoo is the only project of the Trust in Kathmandu Valley.  As a new initiative, the Trust has established an Energy and Climate Change Unit to address the emerging issues of climate change through mitigation and adaptation approach and renewable energy technologies.  The Trust has also started work on urban environment conservation with the Bagmati River Conservation Project.

Varden Conservation Area: Varden Conservation Area is a Pennsylvania state park on 343 acre in Lake and South Canaan Townships, Wayne County, Pennsylvania in the United States.  The conservation area is currently under development.  The land was donated to the Commonwealth of Pennsylvania in December 2001 by Dr. Mead Shaffer a veterinarian and resident of Boothwyn, Pennsylvania in Delaware County.  Dr. Shaffer stated his reason for donating the land, "Environmental education always has been a primary concern of mine.  I trust this land will allow present and future generations to observe and study the diverse ecology found in the Varden Conservation Area."  Varden Conservation Area is near the unincorporated village of Varden on Pennsylvania Route 296, east of the Lackawanna County line.

Rock Glen Conservation Area: Rock Glen Conservation Area is a suburban conservation area located in the town of Arkona, in the municipality of Lambton Shores, Ontario, Canada.  The conservation is owned and maintained by the Ausable Bayfield Conservation Authority (ABCA).  The former "Ausable River Conservation Authority" was Ontario's first conservation authority.  It was created in 1946.  The Bayfield River watershed and smaller streams were added in 1971.  Local municipalities and the Province of Ontario formed "Ausable Bayfield Conservation Authority" (ABCA) to prevent the loss of important local ecosystems, to protect life and property through flood management, and to build a healthier natural environment on a watershed scale.  Rock Glen Conservation Area is situated in a transition zone between the Carolinian forest zone to the south, and the Great Lakes (St. Lawrence Zone to the north), in Lambton Shores, Ontario, Canada.  On the conservation grounds is the Arkona Lions Museum and Information Centre; which houses a collection of Devonian Era fossils and Aboriginal artifacts found in the local area.

Crawford Lake Conservation Area: Crawford Lake Conservation Area is a conservation area owned and operated by Conservation Halton near the community of Campbellville in Milton, Halton, Ontario, Canada.  It is categorized as a regional environmentally sensitive area, an Ontario Area of Natural and Scientific Interest, and part of the Niagara escarpment "world biosphere reserve".  The conservation area contains Crawford Lake, a reconstructed Iroquoian village, and several hiking trails.

Supporting paragraphs: Sandstone Ranch (Nevada) Red Rock Canyon National Conservation Area
Answer: Bureau of Land Management