That's the town, Stornoway, which is fairly flat. However, there are areas on the Island, which are quite the opposite. You'll have to visit to find out!
Thank you for sharing this! I visited Lewis about 15 years ago, for 10 days, with a classmate who had distant cousins there (we were both studying abroad at the University of Edinburgh at the time). We arrived in Stornoway by ferry. I still remember the Island vividly and have always longed to go back.