'Too many tourists' threaten environment

Tourists visiting Australia's natural wonders in large numbers are threatening the environment they want to enjoy a leading futurist says.

Sydney-based writer and futurist Richard Watson warned an eco-tourism and green travel conference in Adelaide on Monday that there was a dark side to tourism. In the short term there is a definite problem that people are possibly going to destroy the very thing they came to experience.

That is without a shadow of a doubt true depending on what the economy does and there is going to be a very very significant growth in population numbers over the next 10 20 50 years.

However Mr Watson said in the long-term oil prices could hurt tourism badly.

When oil starts hitting $200 and $300 a barrel - and it's not if it's going to hit it will hit eventually - that is going to fundamentally change all this.