Butler (cited in Nelsoru 1993) proposed the definition of sustainable development
in the context of tourism as:
"Tourism developed and maintained in an area (community,environment) in such a
manner and at such a scale that it remains viable over an indefinite period and does not
degrade or alter the environment (human and physical) in which it exists to such a degree
that it prohibits the successful development and well-being of other activities and
processes.