LANDSLIDE expert Professor Norbert Morgenstern has been asked to examine two more high-risk slopes during his visit to investigate the cause of last month's fatal slip in Kennedy Town that claimed five lives. The Canadian geotechnical engineer, who arrived on Friday for a five-day stopover at the Government's request, spent yesterday morning studying the scene of the fatal July 23 landslide at Kwun Lung Lau Estate. After spending 90 minutes at the scene, he said: ''This is not a straight-forward matter and it will take time to unravel the complexity of what happened. It is far too early to draw any conclusions. ''At the moment I am concentrating on two factors, water being one because of the torrential rain Hong Kong was experiencing at the time of the tragedy. ''The other involves studying the soil and seeing whether that contributed towards any ground movement.'' While stressing that his report would be protected from any outside interference, he also mentioned that he had been approached by the Government's geotechnical engineering office and the Housing Authority to inspect two other areas of concern. ''Both are apparently nearby, but I have not been given the full details yet so I cannot give you any further information,'' Professor Morgenstern said. His visit will take in meetings with Acting Governor Anson Chan Fang On-sang and engineering experts before ending on Tuesday with a preliminary briefing of his findings to the Legislative Council's lands and works panel. ''Hong Kong will never solve its landslide problems,'' Professor Morgenstern said. ''What the authorities must concentrate on is identifying the black-spot areas and making them safe.'' He denied speculation that he was flown over because of a lack of expertise within the Hong Kong Government. ''I am here to give an independent evaluation, a second opinion even,'' he explained. ''From what I have seen so far, the preliminary reports made by the Government were professional and skilful. This is more of a reconnaissance visit to see the inquiry is being well directed.'' But Professor Morgenstern, from the civil engineering department at the University of Alberta, said it was far too early to determine what caused the landslide under the Housing Society estate in Kennedy Town. He spent yesterday talking to geotechnical engineers to ensure all the information he requires has been collected and then was entertained to lunch by Works Secretary James Blake.