A deep-dive scuba site, tree-top walking bridges and an amphitheatre are some of the community ideas for the future of the Mount Coot-tha quarry.

Maiwar Greens MP Michael Berkman on Wednesday joined the party's candidates for the coming Brisbane City Council election in calling for the quarry, opened in the 1920s, to be transformed into a community recreation area.

Residents would like to see the quarry replaced with tree-top walks. Credit:Robyn Geering

Council had planned to shut down the quarry, a major source of crushed rock for its operations, in about 2025 when it estimated it would run out of material to dig-up.

"Council intends to commence planning for post-quarry use around 2015," its neighbourhood plan read.