The landscape of Sai Kung might lose its attraction to overseas hikers if a proposed offshore wind farm is approved, the Hong Kong Mountaineering Union has warned. The group is the latest organisation to join a campaign, led by the Association for Geoconservation, against the project. Frederick Yu Ka-chi, president of the union, said that the many thousands of tourists who come to see Hong Kong's natural beauty might be disappointed if the landscape was contaminated by development. 'I was always puzzled over why they come to Hong Kong to hike rather than Europe or America. Some Japanese visitors later told me that hiking in Sai Kung was a unique experience as they could enjoy both the green hills and scenic sea views at the same time,' he said. Proposed by CLP Power, the HK$6.7 billion wind farm would be 10km off the Sai Kung coast and comprise 67 wind turbines, each over 120 metres tall. It would supply about 1 per cent of Hong Kong's electricity and avoid 300,000 tonnes of carbon dioxide emissions a year. CLP said the project would add about 2 per cent to electricity bills. But activists say it is not worth spoiling the landscape for an insignificant reduction in greenhouse gases. Signatures collected in Sai Kung this weekend will be submitted to the Environment Bureau. The community group Explore is carrying out an online opinion survey. Young Ng Chun-yeong, chairman of the Association for Geoconservation, said it might kill the bid to list a proposed geopark as a world natural heritage site. Yau Wing-kwong of the Tai Po Environmental Association said Hong Kong should consider co-operating with Guangdong on renewable energy instead of focusing on resources within its territory.