Ordnance Survey:
http://www.ordsvy.gov.uk/home/index.html

The Yorkshire Dales National Park Authority:
http://www.yorkshiredales.org.uk/

The Farming and Rural Conservation Group:
http://www.maff.gov.uk/aboutmaf/agency/FRCA/FRCA.HTM

National Farmers' Union:
http://www.nfu.org.uk/

The Environment Agency:
http://www.environment-agency.gov.uk/index.htm

The Open Spaces Society:
http://www.oss.org.uk/

The Yorkshire Dales Society:
http://www.yorkdalesoc.yorks.net/

The Scottish Qualifications Authority:
http://www.sqa.org.uk/higher-still/

The Yorkshire Dales Tourist Board:
http://www.yorkshiredales.org/

The Limestone Pavement Action Group:
http://www.ccw.gov.uk/english/limestone/

The Scottish Association of Geography Teachers:
http://www.geocities.com/sagtweb/

About.geography (American site but does have some useful information):
http://geography.about.com/science/geography/cs/aboutgeography/index.htm

UK Caving:
http://www.caves.org.uk/

The Yorkshire Dales Public Transport Users Group:
www.dalesbus.org

All the sites listed have been checked. However, the constantly-changing nature of the Internet means some sites may alter after we have visited them. The BBC is not responsible for the content of external websites. You can help maintain the quality of this site by letting us know if you find any sites unacceptable or offensive. Email:higherstill@bbc.co.uk Your comments will be carefully considered.