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QLDC parks manager Gordon Bailey said the 200m-long section was "a problem in need of a solution".
"The section is effectively the area behind the skating rink.
"Over time, high lake levels have seriously undermined the tree roots of several large specimens and eaten into the bank that supports part of the heavily used Queenstown Gardens' trail," Mr Bailey said.
Damage to the trees - some of which were on the verge of falling into the lake - and the threat to the track had invited consideration of "some kind of extension to the rip rap flood protection wall", which had been placed at the head of the gardens' peninsula following the 1999 flood.
"In the ensuing years, wave action associated with high lake levels has severely impacted on the exposed section of shoreline.
"It is clear something needs to happen, but we would like public opinion to shape any response," Mr Bailey said.
Any solution had the potential to incorporate the trail in an "innovative" way.
"Potentially, we could create more of a lake edge feature, bringing the trail out to run across the top of any potential structure."
Alternatively, the community might favour a more "minimal" approach to the problem.
"Once we get a steer from the community, we will then need to look at cost and consent issues."
• Questions, comments or suggestions should be emailed to email@example.com with the subject line "Gardens", or posted to "Gardens", c/- QLDC, Private Bag 50072, Queenstown 9348, by November 30.