IN CENTRAL Queensland, the Capricorn Caves are schooling adults and children alike in how to be eco-friendly.
Other ecotourism pioneers from across Australia and the world with the same mindset as the tourist hotspot will join together to teach each other a lesson or two today.
The G20 Sustainable Leaders Forum will focus on the role sustainability will play in managing the development of the world's tourism industry.
The Capricorn Caves is already considered one of Ecotourism Australia's leading operators, joining the organisation's Geotourism Forum earlier this year.
The forum's aim is to advise how geotourism can be best promoted and to inspire environmentally sustainable and culturally responsible tourism.
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Not only do the caves set the bar high with rainwater usage, recycling and many other eco-friendly practices, educating school children is also a top priority.
Environmental awareness programs are a hit with many youngsters.
Capricorn Caves' general manager Amanda Jennings-Hinton said being eco-friendly was not a policy forced upon the business.
"It's just what comes naturally," she said.
"For us as a business, it's not a forced thing, we just want to keep (the caves) for future generations."
Ms Jennings-Hinton said European tourists were particularly attracted to the caves.
The co-owner of an eco-friendly tourism operator west of Mackay said northern Europeans made up about 25 to 30% of their guest list.
Broken River Mountain Resort co-owner Denis Murray said northern Europeans were very eco-aware and he believes it influences their holiday decisions.