Near the mouth of Scotts Creek 
Scotts Creek starts around Chatswood in Sydney and terminates at Middle Harbour between Castle Cove and Middle Cove. It is part of Willoughby's stormwater catchment and sewerage flow, but major attempts have been made in recent years to clean it. We walked along the North Arm track, and ventured onto an unofficial track along the mangrove swamp towards the mouth.
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