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The 56-year-old Dunedin man who collapsed and died while cycling at Lake Hawea on Friday was Dr David Peacock.
Dr Peacock, a graduate of the University of Otago, was a psychiatric registrar with the Otago District Health Board.
A keen mountain biker, he was a former president of the Otago Tramping and Mountaineering Club and a member of the Royal Dunedin Male Choir.
Last month, he sang in the Dunedin production of Gilbert and Sullivan's opera Yeomen of the Guard.