The creator of one of the world's largest indoor rainforests is set to build a $150 million eco-tourism attraction at the site of the former Anglesea coal mine.

Resources giant Alcoa wants community feedback about its proposed rehabilitation of the 325-hectare Anglesea site and plans to draw thousands of visitors to the area.

It is partnering with the people who built Britain's top eco-attraction The Eden Project, which transformed a disused quarry in Cornwall into a field of giant plastic domes that house tropical rainforests.

An artist's impression of the Eden Project's proposal for an ecotourism attraction at the former Alcoa coal mine.

Its rough plans for Anglesea show a massive lake with piers leading into the water, huge art installations and a series of gardens connected by pathways.