Modern maps are accused of lacking detail - image courtesy of Google Maps
Internet mapping is wiping the rich geography and history of Britain off the map, the president of the British Cartographic Society has said.
Mary Spence said internet maps such as Google and Multimap were good for driving but left out crucial data people need to understand a landscape.
Mrs Spence was speaking at the Institute of British Geographers conference in London.
Google said traditional landmarks were still mapped but must be searched for.
Ms Spence said landmarks such as churches, ancient woodlands and stately homes were in danger of being forgotten because many internet maps fail to include them.
Traditional maps feature landmarks such as museums and art galleries
She said: "Corporate cartographers are demolishing thousands of years of history - not to mention Britain's remarkable geography - at a stroke by not including them on maps which millions of us now use every day.
"We're in real danger of losing what makes maps so unique, giving us a feel for a place even if we've never been there."
Projects such as Open Street Map, through which thousands of Britons have contributed their local knowledge to map pubs, landmarks and even post boxes online, are the first step in the fight back against "corporate blankwash", she added.
By way of example, Ms Spence said that if someone walked around the South Kensington area of London, they would encounter landmarks such as the Science Museum, Royal Albert Hall and the Natural History Museum, which could not be found on Google Maps.
Elsewhere, Worcester Cathedral and Tewkesbury Abbey are not on their respective Google Maps.
Mary Spence and Adrian Mars discuss internet mapping
"But it's not just Google - it's Nokia, Microsoft, maps on satellite navigation tools. It's diluting the quality of the graphic image that we call a map."
Ms Spence believes that the consequence will be long-term damage to future generations of map readers, because this skill is not being taught in schools and people are simply handling "geographical data".
But Ed Parsons, geospatial technologist at Google, said the way in which people used maps was changing.
He said: "Internet maps can now be personalised, allowing people to include landmarks and information that is of interest to them.
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