The development and management of tourism such that the environment is preserved. The income from tourism adds to the investment into landscape conservation. Lake and Hanson (2000) Urb. Geog. 21, 1–4 argue that most of the key concepts in ecotourism are chaotic; ‘their uses imply or signify a great range of things, to the point where nearly anything can be deemed sustainable ecotourism’ (D. Fennell 2003). Klack (2007) Geog. Compass 1, 5 thinks that sustainable ecotourism should give equal weighting to ecological integrity, economic viability, and social justice.